Hello again, After looking once more for all files within ConTeXt with “apa” in their name, I found out that I can start to write my own citation style by changing things in the file “~/context/tex/texmf-context/tex/context/bib/bibl-apa.tex”. It’s not as convenient as I had described in my previous post, but not to far from that and I think I will manage to get everything working. Anyway it is much easier for me than learning to edit XML in CSL files which I looked at today. What I still do not understand: How can I make the edited file work as an alternative style to APA in \setuppublications in my environment? I tried to rename the file to “bibl-abc.tex“ and change \setuppublications in my ConTeXt environment to \setuppublications[alternative=abc] but that did not work. Do I have to rename something else? And supposed I have succeeded to create my own style, will those selfmade style files survive an update? And what are that localized files for like “bibl-apa-de.tex”, “bibl-apa-fr.tex” etc.? They seem to be older than “bibl-apa.tex”. \Greetings Jörg