The Zotero API can now return formatted references for Zotero items. Of
greatest relevance to this list, we’ll soon be posting the code to our
node.js-based wrapper around citeproc-js, which we’re using as a backend
service.
See my message on zotero-dev for further details:
http://groups.google.com/group/zotero-dev/browse_thread/thread/d6b9cf8d28e3ee94