Cita APA (7th ed.)

Gardner, E. S. (1972). The case of the spurius spinster (5.). Pocket Books.

Cita Chicago (17th ed.)

Gardner, Erle Stanley. The Case of the Spurius Spinster. 5. New York, Estados Unidos: Pocket Books, 1972.

Cita MLA (9th ed.)

Gardner, Erle Stanley. The Case of the Spurius Spinster. 5. Pocket Books, 1972.