I see someone came up with a stub "translator" from MARC to Zotero https://github.com/zotero/translators/issues/762#issuecomment-54757911 Zotero is what https://www.mediawiki.org/wiki/Citoid uses, it might be useful at some point. Karen, are you comfortable editing JavaScript? No git knowledge is required, GitHub has "edit" buttons.
Nemo