APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.