I also need BibTeX document export to give the page numbers.
I’m testing out Paperpile and Google Docs for a PhD thesis in the humanities. So far so good, but I need an ‘exit plan’ (ideally to LaTeX + bibtex) if my formatting needs for the final product are more exacting than Google Docs can generate.
Exporting with \cite{} keys could work, but only if the page numbers are given.
A second, more advanced addition would be something like bibtex-chicago 's \headlesscite{} for when you want to suppress the author’s name. (As when you use the author’s name in a sentence in a footnote, and follow the sentence with the citation of the work.