Q. I can’t seem to find any definitive answer on how to cite occasional papers. These are more than working papers and have a date and place of publication.
A. Any paper with a date and place of publication may follow the usual citation format: author (or organization), title, place, publisher, date. If CMOS doesn’t have an example of your specific type of paper, find something similar and model your citation on it (perhaps at paragraph 14.178 or 14.179). A published title of a stand-alone occasional paper is italicized; titles of unpublished papers are quoted. Don’t worry about a “definitive answer”—the main thing is to include the information that will document your source and help readers find it.