diff --git a/md_pdf/assets/harverd.csl b/md_pdf/assets/harverd.csl
deleted file mode 100644
index 23d6744..0000000
--- a/md_pdf/assets/harverd.csl
+++ /dev/null
@@ -1,658 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<style xmlns="http://purl.org/net/xbiblio/csl" class="in-text" version="1.0" demote-non-dropping-particle="never">
-  <info>
-    <title>American Psychological Association 6th edition</title>
-    <title-short>APA</title-short>
-    <id>http://www.zotero.org/styles/apa</id>
-    <link href="http://www.zotero.org/styles/apa" rel="self"/>
-    <link href="http://owl.english.purdue.edu/owl/resource/560/01/" rel="documentation"/>
-    <author>
-      <name>Simon Kornblith</name>
-      <email>simon@simonster.com</email>
-    </author>
-    <contributor>
-      <name>Bruce D'Arcus</name>
-    </contributor>
-    <contributor>
-      <name>Curtis M. Humphrey</name>
-    </contributor>
-    <contributor>
-      <name>Richard Karnesky</name>
-      <email>karnesky+zotero@gmail.com</email>
-      <uri>http://arc.nucapt.northwestern.edu/Richard_Karnesky</uri>
-    </contributor>
-    <contributor>
-      <name>Sebastian Karcher</name>
-    </contributor>
-    <contributor>
-      <name> Brenton M. Wiernik</name>
-      <email>zotero@wiernik.org</email>
-    </contributor>
-    <category citation-format="author-date"/>
-    <category field="psychology"/>
-    <category field="generic-base"/>
-    <updated>2016-09-28T13:09:49+00:00</updated>
-    <rights license="http://creativecommons.org/licenses/by-sa/3.0/">This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 License</rights>
-  </info>
-  <locale xml:lang="en">
-    <terms>
-      <term name="editortranslator" form="short">
-        <single>ed. &amp; trans.</single>
-        <multiple>eds. &amp; trans.</multiple>
-      </term>
-      <term name="translator" form="short">
-        <single>trans.</single>
-        <multiple>trans.</multiple>
-      </term>
-    </terms>
-  </locale>
-  <macro name="container-contributors">
-    <choose>
-      <if type="chapter paper-conference entry-dictionary entry-encyclopedia" match="any">
-        <group delimiter=", ">
-          <names variable="container-author" delimiter=", ">
-            <name and="symbol" initialize-with=". " delimiter=", "/>
-            <label form="short" prefix=" (" text-case="title" suffix=")"/>
-          </names>
-          <names variable="editor translator" delimiter=", ">
-            <name and="symbol" initialize-with=". " delimiter=", "/>
-            <label form="short" prefix=" (" text-case="title" suffix=")"/>
-          </names>
-        </group>
-      </if>
-    </choose>
-  </macro>
-  <macro name="secondary-contributors">
-    <choose>
-      <if type="article-journal chapter paper-conference entry-dictionary entry-encyclopedia" match="none">
-        <group delimiter=", " prefix=" (" suffix=")">
-          <names variable="container-author" delimiter=", ">
-            <name and="symbol" initialize-with=". " delimiter=", "/>
-            <label form="short" prefix=", " text-case="title"/>
-          </names>
-          <names variable="editor translator" delimiter=", ">
-            <name and="symbol" initialize-with=". " delimiter=", "/>
-            <label form="short" prefix=", " text-case="title"/>
-          </names>
-        </group>
-      </if>
-    </choose>
-  </macro>
-  <macro name="author">
-    <names variable="author">
-      <name name-as-sort-order="all" and="symbol" sort-separator=", " initialize-with=". " delimiter=", " delimiter-precedes-last="always"/>
-      <label form="short" prefix=" (" suffix=")" text-case="capitalize-first"/>
-      <substitute>
-        <names variable="editor"/>
-        <names variable="translator"/>
-        <choose>
-          <if type="report">
-            <text variable="publisher"/>
-            <text macro="title"/>
-          </if>
-          <else>
-            <text macro="title"/>
-          </else>
-        </choose>
-      </substitute>
-    </names>
-  </macro>
-  <macro name="author-short">
-    <names variable="author">
-      <name form="short" and="symbol" delimiter=", " initialize-with=". "/>
-      <substitute>
-        <names variable="editor"/>
-        <names variable="translator"/>
-        <choose>
-          <if type="report">
-            <text variable="publisher"/>
-            <text variable="title" form="short" font-style="italic"/>
-          </if>
-          <else-if type="legal_case">
-            <text variable="title" font-style="italic"/>
-          </else-if>
-          <else-if type="book graphic  motion_picture song" match="any">
-            <text variable="title" form="short" font-style="italic"/>
-          </else-if>
-          <else-if type="bill legislation" match="any">
-            <text variable="title" form="short"/>
-          </else-if>
-          <else-if variable="reviewed-author">
-            <choose>
-              <if variable="reviewed-title" match="none">
-                <text variable="title" form="short" font-style="italic" prefix="Review of "/>
-              </if>
-              <else>
-                <text variable="title" form="short" quotes="true"/>
-              </else>
-            </choose>
-          </else-if>
-          <else>
-            <text variable="title" form="short" quotes="true"/>
-          </else>
-        </choose>
-      </substitute>
-    </names>
-  </macro>
-  <macro name="access">
-    <choose>
-      <if type="thesis report" match="any">
-        <choose>
-          <if variable="DOI" match="any">
-            <text variable="DOI" prefix="https://doi.org/"/>
-          </if>
-          <else-if variable="archive" match="any">
-            <group>
-              <text term="retrieved" text-case="capitalize-first" suffix=" "/>
-              <text term="from" suffix=" "/>
-              <text variable="archive" suffix="."/>
-              <text variable="archive_location" prefix=" (" suffix=")"/>
-            </group>
-          </else-if>
-          <else>
-            <group>
-              <text term="retrieved" text-case="capitalize-first" suffix=" "/>
-              <text term="from" suffix=" "/>
-              <text variable="URL"/>
-            </group>
-          </else>
-        </choose>
-      </if>
-      <else>
-        <choose>
-          <if variable="DOI">
-            <text variable="DOI" prefix="https://doi.org/"/>
-          </if>
-          <else>
-            <choose>
-              <if type="webpage">
-                <group delimiter=" ">
-                  <text term="retrieved" text-case="capitalize-first" suffix=" "/>
-                  <group>
-                    <date variable="accessed" form="text" suffix=", "/>
-                  </group>
-                  <text term="from"/>
-                  <text variable="URL"/>
-                </group>
-              </if>
-              <else>
-                <group>
-                  <text term="retrieved" text-case="capitalize-first" suffix=" "/>
-                  <text term="from" suffix=" "/>
-                  <text variable="URL"/>
-                </group>
-              </else>
-            </choose>
-          </else>
-        </choose>
-      </else>
-    </choose>
-  </macro>
-  <macro name="title">
-    <choose>
-      <if type="book graphic manuscript motion_picture report song speech thesis" match="any">
-        <choose>
-          <if variable="version" type="book" match="all">
-            <!---This is a hack until we have a computer program type -->
-            <text variable="title"/>
-          </if>
-          <else>
-            <text variable="title" font-style="italic"/>
-          </else>
-        </choose>
-      </if>
-      <else-if variable="reviewed-author">
-        <choose>
-          <if variable="reviewed-title">
-            <group delimiter=" ">
-              <text variable="title"/>
-              <group delimiter=", " prefix="[" suffix="]">
-                <text variable="reviewed-title" font-style="italic" prefix="Review of "/>
-                <names variable="reviewed-author" delimiter=", ">
-                  <label form="verb-short" suffix=" "/>
-                  <name and="symbol" initialize-with=". " delimiter=", "/>
-                </names>
-              </group>
-            </group>
-          </if>
-          <else>
-            <!-- assume `title` is title of reviewed work -->
-            <group delimiter=", " prefix="[" suffix="]">
-              <text variable="title" font-style="italic" prefix="Review of "/>
-              <names variable="reviewed-author" delimiter=", ">
-                <label form="verb-short" suffix=" "/>
-                <name and="symbol" initialize-with=". " delimiter=", "/>
-              </names>
-            </group>
-          </else>
-        </choose>
-      </else-if>
-      <else>
-        <text variable="title"/>
-      </else>
-    </choose>
-  </macro>
-  <macro name="title-plus-extra">
-    <text macro="title"/>
-    <choose>
-      <if type="report thesis" match="any">
-        <group prefix=" (" suffix=")" delimiter=", ">
-          <group delimiter=" ">
-            <choose>
-              <if variable="genre" match="any">
-                <text variable="genre"/>
-              </if>
-              <else>
-                <text variable="collection-title"/>
-              </else>
-            </choose>
-            <text variable="number" prefix="No. "/>
-          </group>
-          <group delimiter=" ">
-            <text term="version" text-case="capitalize-first"/>
-            <text variable="version"/>
-          </group>
-          <text macro="edition"/>
-        </group>
-      </if>
-      <else-if type="post-weblog webpage" match="any">
-        <text variable="genre" prefix=" [" suffix="]"/>
-      </else-if>
-      <else-if variable="version">
-        <group delimiter=" " prefix=" (" suffix=")">
-          <text term="version" text-case="capitalize-first"/>
-          <text variable="version"/>
-        </group>
-      </else-if>
-    </choose>
-    <text macro="format" prefix=" [" suffix="]"/>
-  </macro>
-  <macro name="format">
-    <choose>
-      <if match="any" variable="medium">
-        <text variable="medium" text-case="capitalize-first"/>
-      </if>
-      <else-if type="dataset" match="any">
-        <text value="Data set"/>
-      </else-if>
-    </choose>
-  </macro>
-  <macro name="publisher">
-    <choose>
-      <if type="report" match="any">
-        <group delimiter=": ">
-          <text variable="publisher-place"/>
-          <text variable="publisher"/>
-        </group>
-      </if>
-      <else-if type="thesis" match="any">
-        <group delimiter=", ">
-          <text variable="publisher"/>
-          <text variable="publisher-place"/>
-        </group>
-      </else-if>
-      <else-if type="post-weblog webpage" match="none">
-        <group delimiter=", ">
-          <choose>
-            <if variable="event version" type="speech motion_picture" match="none">
-              <!-- Including version is to avoid printing the programming language for computerProgram /-->
-              <text variable="genre"/>
-            </if>
-          </choose>
-          <choose>
-            <if type="article-journal article-magazine" match="none">
-              <group delimiter=": ">
-                <choose>
-                  <if variable="publisher-place">
-                    <text variable="publisher-place"/>
-                  </if>
-                  <else>
-                    <text variable="event-place"/>
-                  </else>
-                </choose>
-                <text variable="publisher"/>
-              </group>
-            </if>
-          </choose>
-        </group>
-      </else-if>
-    </choose>
-  </macro>
-  <macro name="event">
-    <choose>
-      <if variable="container-title" match="none">
-        <choose>
-          <if variable="event">
-            <choose>
-              <if variable="genre" match="none">
-                <text term="presented at" text-case="capitalize-first" suffix=" "/>
-                <text variable="event"/>
-              </if>
-              <else>
-                <group delimiter=" ">
-                  <text variable="genre" text-case="capitalize-first"/>
-                  <text term="presented at"/>
-                  <text variable="event"/>
-                </group>
-              </else>
-            </choose>
-          </if>
-          <else-if type="speech">
-            <text variable="genre" text-case="capitalize-first"/>
-          </else-if>
-        </choose>
-      </if>
-    </choose>
-  </macro>
-  <macro name="issued">
-    <choose>
-      <if type="bill legal_case legislation" match="none">
-        <choose>
-          <if variable="issued">
-            <group prefix=" (" suffix=")">
-              <date variable="issued">
-                <date-part name="year"/>
-              </date>
-              <text variable="year-suffix"/>
-              <choose>
-                <if type="speech" match="any">
-                  <date variable="issued">
-                    <date-part prefix=", " name="month"/>
-                  </date>
-                </if>
-                <else-if type="article-journal bill book chapter graphic legal_case legislation motion_picture paper-conference report song dataset" match="none">
-                  <date variable="issued">
-                    <date-part prefix=", " name="month"/>
-                    <date-part prefix=" " name="day"/>
-                  </date>
-                </else-if>
-              </choose>
-            </group>
-          </if>
-          <else-if variable="status">
-            <group prefix=" (" suffix=")">
-              <text variable="status"/>
-              <text variable="year-suffix" prefix="-"/>
-            </group>
-          </else-if>
-          <else>
-            <group prefix=" (" suffix=")">
-              <text term="no date" form="short"/>
-              <text variable="year-suffix" prefix="-"/>
-            </group>
-          </else>
-        </choose>
-      </if>
-    </choose>
-  </macro>
-  <macro name="issued-sort">
-    <choose>
-      <if type="article-journal bill book chapter graphic legal_case legislation motion_picture paper-conference report song dataset" match="none">
-        <date variable="issued">
-          <date-part name="year"/>
-          <date-part name="month"/>
-          <date-part name="day"/>
-        </date>
-      </if>
-      <else>
-        <date variable="issued">
-          <date-part name="year"/>
-        </date>
-      </else>
-    </choose>
-  </macro>
-  <macro name="issued-year">
-    <choose>
-      <if variable="issued">
-        <group delimiter="/">
-          <date variable="original-date" form="text"/>
-          <group>
-            <date variable="issued">
-              <date-part name="year"/>
-            </date>
-            <text variable="year-suffix"/>
-          </group>
-        </group>
-      </if>
-      <else-if variable="status">
-        <text variable="status"/>
-        <text variable="year-suffix" prefix="-"/>
-      </else-if>
-      <else>
-        <text term="no date" form="short"/>
-        <text variable="year-suffix" prefix="-"/>
-      </else>
-    </choose>
-  </macro>
-  <macro name="edition">
-    <choose>
-      <if is-numeric="edition">
-        <group delimiter=" ">
-          <number variable="edition" form="ordinal"/>
-          <text term="edition" form="short"/>
-        </group>
-      </if>
-      <else>
-        <text variable="edition"/>
-      </else>
-    </choose>
-  </macro>
-  <macro name="locators">
-    <choose>
-      <if type="article-journal article-magazine" match="any">
-        <group prefix=", " delimiter=", ">
-          <group>
-            <text variable="volume" font-style="italic"/>
-            <text variable="issue" prefix="(" suffix=")"/>
-          </group>
-          <text variable="page"/>
-        </group>
-        <choose>
-          <!--for advanced online publication-->
-          <if variable="issued">
-            <choose>
-              <if variable="page issue" match="none">
-                <text variable="status" prefix=". "/>
-              </if>
-            </choose>
-          </if>
-        </choose>
-      </if>
-      <else-if type="article-newspaper">
-        <group delimiter=" " prefix=", ">
-          <label variable="page" form="short"/>
-          <text variable="page"/>
-        </group>
-      </else-if>
-      <else-if type="book graphic motion_picture report song chapter paper-conference entry-encyclopedia entry-dictionary" match="any">
-        <group prefix=" (" suffix=")" delimiter=", ">
-          <choose>
-            <if type="report" match="none">
-              <!-- edition for report is included in title-plus-extra /-->
-              <text macro="edition"/>
-            </if>
-          </choose>
-          <choose>
-            <if variable="volume" match="any">
-              <group>
-                <text term="volume" form="short" text-case="capitalize-first" suffix=" "/>
-                <number variable="volume" form="numeric"/>
-              </group>
-            </if>
-            <else>
-              <group>
-                <text term="volume" form="short" plural="true" text-case="capitalize-first" suffix=" "/>
-                <number variable="number-of-volumes" form="numeric" prefix="1&#8211;"/>
-              </group>
-            </else>
-          </choose>
-          <group>
-            <label variable="page" form="short" suffix=" "/>
-            <text variable="page"/>
-          </group>
-        </group>
-      </else-if>
-      <else-if type="legal_case">
-        <group prefix=" (" suffix=")" delimiter=" ">
-          <text variable="authority"/>
-          <choose>
-            <if variable="container-title" match="any">
-              <!--Only print year for cases published in reporters-->
-              <date variable="issued" form="numeric" date-parts="year"/>
-            </if>
-            <else>
-              <date variable="issued" form="text"/>
-            </else>
-          </choose>
-        </group>
-      </else-if>
-      <else-if type="bill legislation" match="any">
-        <date variable="issued" prefix=" (" suffix=")">
-          <date-part name="year"/>
-        </date>
-      </else-if>
-    </choose>
-  </macro>
-  <macro name="citation-locator">
-    <group>
-      <choose>
-        <if locator="chapter">
-          <label variable="locator" form="long" text-case="capitalize-first"/>
-        </if>
-        <else>
-          <label variable="locator" form="short"/>
-        </else>
-      </choose>
-      <text variable="locator" prefix=" "/>
-    </group>
-  </macro>
-  <macro name="container">
-    <choose>
-      <if type="post-weblog webpage" match="none">
-        <group>
-          <choose>
-            <if type="chapter paper-conference entry-encyclopedia" match="any">
-              <text term="in" text-case="capitalize-first" suffix=" "/>
-            </if>
-          </choose>
-          <group delimiter=", ">
-            <text macro="container-contributors"/>
-            <text macro="secondary-contributors"/>
-            <text macro="container-title"/>
-          </group>
-        </group>
-      </if>
-    </choose>
-  </macro>
-  <macro name="container-title">
-    <choose>
-      <if type="article article-journal article-magazine article-newspaper" match="any">
-        <text variable="container-title" font-style="italic" text-case="title"/>
-      </if>
-      <else-if type="bill legal_case legislation" match="none">
-        <text variable="container-title" font-style="italic"/>
-      </else-if>
-    </choose>
-  </macro>
-  <macro name="legal-cites">
-    <choose>
-      <if type="legal_case" match="any">
-        <group prefix=", " delimiter=" ">
-          <choose>
-            <if variable="container-title">
-              <text variable="volume"/>
-              <text variable="container-title"/>
-              <group delimiter=" ">
-                <!--change to label variable="section" as that becomes available -->
-                <text term="section" form="symbol"/>
-                <text variable="section"/>
-              </group>
-              <text variable="page"/>
-            </if>
-            <else>
-              <text variable="number" prefix="No. "/>
-            </else>
-          </choose>
-        </group>
-      </if>
-      <else-if type="bill legislation" match="any">
-        <group delimiter=", " prefix=", ">
-          <choose>
-            <if variable="number">
-              <!--There's a public law number-->
-              <text variable="number" prefix="Pub. L. No. "/>
-              <group delimiter=" ">
-                <!--change to label variable="section" as that becomes available -->
-                <text term="section" form="symbol"/>
-                <text variable="section"/>
-              </group>
-              <group delimiter=" ">
-                <text variable="volume"/>
-                <text variable="container-title"/>
-                <text variable="page-first"/>
-              </group>
-            </if>
-            <else>
-              <group delimiter=" ">
-                <text variable="volume"/>
-                <text variable="container-title"/>
-                <!--change to label variable="section" as that becomes available -->
-                <text term="section" form="symbol"/>
-                <text variable="section"/>
-              </group>
-            </else>
-          </choose>
-        </group>
-      </else-if>
-    </choose>
-  </macro>
-  <macro name="original-date">
-    <choose>
-      <if variable="original-date">
-        <group prefix="(" suffix=")" delimiter=" ">
-          <!---This should be localized-->
-          <text value="Original work published"/>
-          <date variable="original-date" form="text"/>
-        </group>
-      </if>
-    </choose>
-  </macro>
-  <citation et-al-min="6" et-al-use-first="1" et-al-subsequent-min="3" et-al-subsequent-use-first="1" disambiguate-add-year-suffix="true" disambiguate-add-names="true" disambiguate-add-givenname="true" collapse="year" givenname-disambiguation-rule="primary-name">
-    <sort>
-      <key macro="author"/>
-      <key macro="issued-sort"/>
-    </sort>
-    <layout prefix="(" suffix=")" delimiter="; ">
-      <group delimiter=", ">
-        <text macro="author-short"/>
-        <text macro="issued-year"/>
-        <text macro="citation-locator"/>
-      </group>
-    </layout>
-  </citation>
-  <bibliography hanging-indent="true" et-al-min="8" et-al-use-first="6" et-al-use-last="true" entry-spacing="0" line-spacing="2">
-    <sort>
-      <key macro="author"/>
-      <key macro="issued-sort" sort="ascending"/>
-      <key macro="title"/>
-    </sort>
-    <layout>
-      <group suffix=".">
-        <group delimiter=". ">
-          <text macro="author"/>
-          <text macro="issued"/>
-          <text macro="title-plus-extra"/>
-          <text macro="container"/>
-        </group>
-        <text macro="legal-cites"/>
-        <text macro="locators"/>
-        <group delimiter=", " prefix=". ">
-          <text macro="event"/>
-          <text macro="publisher"/>
-        </group>
-      </group>
-      <text macro="access" prefix=" "/>
-      <text macro="original-date" prefix=" "/>
-    </layout>
-  </bibliography>
-</style>