Tell us what you need to modify first. If it's just about German language terms, then you should need to modify a style; there just might be a missing translation.

Moreover, the german APA-Style causes an error at the handling of pages: there always appear two dots after the "S." --> (S.. 177) and not (S. 177)

This looks like a bug in Zotero.

Unfortunately, the zotero database lacks a field for editors when adding book-chapters.

Incorrect. So this is user error ;-)

It seems like you need just minor changes in APA then.

Can you do me a favor and test the new dev APA style I was working on? If it's correct except for the minor punctuation issues you note (as well as the bug), let me know. Well, and let me know if there are any other problems.

Once that's sorted out, I'll suggest you modify that APA style to suit your needs, and submit it to the Zotero repository for hosting. You need to give it a new name and ID obviously.

http://www.zotero.org/styles/, under Dev Styles

..sorry, maybe im totally blind but i did not find any field for adding the editors when creating a new book-chapter...

..sorry, maybe im totally blind but i did not find any field for adding the editors when creating a new book-chapter...

See the FAQ.

The feature for adding editors is really great!
I think it would be even more usable, if there would appear an arrow next to the field "author". Then it would be even more obvious that this type can be modified.

Well, here is my first version of new style called "zfpaed":

<?xml version="1.0" encoding="UTF-8"?>
<?oxygen RNGSchema="http://xbiblio.svn.sourceforge.net/viewvc/*checkout*/xbiblio/csl/schema/trunk/csl.rnc" type="compact"?>
<style xmlns="http://purl.org/net/xbiblio/csl" class="in-text" xml:lang="en">
<info>
<title>Zeitschrift fuer Paedagogik</title>
<id>http://www.zotero.org/styles/zfpaed</id>;
<link href="http://www.zotero.org/styles/zfpaed"/>
<author>
<name>Christian Bogner</name>
<email>christian.bogner@gmail.com</email>
</author>
<category term="paedagogics"/>
<category term="generic-base"/>
<category term="author-date"/>
<updated>2008-01-28T07:27:14+00:00</updated>
</info>
<macro name="editor-translator">
<names variable="editor translator" prefix="(" suffix=")" delimiter=", ">
<name and="symbol" initialize-with=". " delimiter=", "/>
<label form="short" prefix=", " text-case="capitalize-first" suffix="."/>
</names>
</macro>
<macro name="author">
<names variable="author">
<name name-as-sort-order="all" 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"/>
<text macro="title"/>
</substitute>
</names>
</macro>
<macro name="author-short">
<names variable="author">
<name form="short" delimiter="/" initialize-with=". " delimiter-precedes-last="always"/>
<substitute>
<names variable="editor"/>
<names variable="translator"/>
<choose>
<if type="book">
<text variable="title" form="short"/>
</if>
<else>
<text variable="title" form="short" quotes="true"/>
</else>
</choose>
</substitute>
</names>
</macro>
<macro name="access">
<choose>
<if variable="DOI">
<text variable="DOI" prefix="doi: "/>
</if>
<else>
<group>
<text term="retrieved" text-case="capitalize-first" suffix=" "/>
<date variable="accessed" suffix=", ">
<date-part name="month" suffix=" "/>
<date-part name="day" suffix=", "/>
<date-part name="year"/>
</date>
<group>
<text term="from" suffix=" "/>
<text variable="URL"/>
</group>
</group>
</else>
</choose>
</macro>
<macro name="title">
<choose>
<if type="book">
<text variable="title" text-case="sentence"/>
</if>
<else>
<text variable="title" text-case="sentence"/>
</else>
</choose>
</macro>
<macro name="publisher">
<group delimiter=": ">
<text variable="publisher-place"/>
<text variable="publisher"/>
</group>
</macro>
<macro name="event">
<text variable="event"/>
<text variable="event-place" prefix=", "/>
</macro>
<citation>
<option name="et-al-min" value="4"/>
<option name="et-al-use-first" value="1"/>
<option name="et-al-subsequent-min" value="4"/>
<option name="et-al-subsequent-use-first" value="1"/>
<option name="disambiguate-add-year-suffix" value="true"/>
<option name="disambiguate-add-names" value="true"/>
<option name="disambiguate-add-givenname" value="true"/>
<option name="collapse" value="year"/>
<sort>
<key macro="author"/>
<key variable="issued"/>
</sort>
<layout prefix="(" suffix=")" delimiter="; ">
<group delimiter=" ">
<text macro="author-short"/>
<date variable="issued">
<date-part name="year"/>
</date>
</group>
<group>
<label variable="locator" include-period="false" form="short" prefix=", "/>
<text variable="locator" prefix=" "/>
</group>
</layout>
</citation>
<bibliography>
<option name="hanging-indent" value="false"/>
<option name="et-al-min" value="6"/>
<option name="et-al-use-first" value="6"/>
<sort>
<key macro="author"/>
<key variable="issued"/>
</sort>
<layout>
<text macro="author"/>
<group prefix=" (" suffix="):">
<date variable="issued">
<date-part name="year"/>
</date>
<choose>
<if type="book chapter article-journal" match="none">
<date variable="issued">
<date-part prefix=", " name="month"/>
<date-part prefix=" " name="day"/>
</date>
</if>
</choose>
</group>
<choose>
<if type="book">
<group suffix=".">
<text macro="title" prefix=" "/>
<text macro="editor-translator" prefix=" "/>
<text variable="edition" prefix=" (" suffix=")"/>
</group>
<text prefix=" " suffix="." macro="publisher"/>
</if>
<else-if type="chapter">
<text macro="title" prefix=" "/>
<group class="container" prefix=". ">
<text term="in" text-case="capitalize-first" suffix=": "/>
<group delimiter=": " suffix=".">
<names variable="editor translator" delimiter=", ">
<name and="symbol" sort-separator=", " initialize-with=". "/>
<label form="short" prefix=" (" suffix=".)" text-case="capitalize-first"/>
</names>
<group delimiter=" ">
<text variable="container-title" suffix="."/>
<group>
<text variable="collection-title" suffix="."/>
<text macro="publisher" suffix="."/>
</group>
</group>
</group>
<label variable="page" form="short" include-period="false" prefix=" " suffix=". "/>
<text variable="page" suffix="."/>
</group>

</else-if>
<else>
<group suffix=".">
<text macro="title" prefix=" "/>
<text macro="editor-translator" prefix=" "/>
</group>
<group class="container" prefix=" " suffix=".">
<text term="in" text-case="capitalize-first" suffix=": "/>
<text variable="container-title" suffix=" "/>
<text variable="volume" suffix=", "/>
<text variable="issue" prefix="H. " suffix=", "/>
<label variable="page" form="short" suffix=" "/>
<text variable="page"/>
</group>
</else>
</choose>
<text prefix=" " macro="access"/>
</layout>
</bibliography>
</style>

Thank you, the Import works using the OPEN-dialogue.

My zotero does not show an arrow because i'm using another theme (iFox). The iFox theme looks great but has some limitations obviously...

By the way, what does it mean to submit my new style to the repository? Sorry, but i'm rather unexperienced with CVS :-/

Christian