Citation, Documentation of Sources

Q. I am using the author-date system for a book. I need to cite a response from a survey that was done after a workshop. The survey results were never published and the responses are anonymous.

A. You can write, “Unpublished survey with anonymous responses”—although I’m afraid that doesn’t sound very authoritative. If it has a date and if someone admits to having administered it, those could be your author and date.