APA (7th ed.) Citation

Hagen, O. A. (1969). Who done it?: A guide to detective, mystery, and suspense fiction. Bowker.

Chicago Style (17th ed.) Citation

Hagen, Ordean A. Who Done It?: A Guide to Detective, Mystery, and Suspense Fiction. New York: Bowker, 1969.

MLA (8th ed.) Citation

Hagen, Ordean A. Who Done It?: A Guide to Detective, Mystery, and Suspense Fiction. Bowker, 1969.