APA (7th ed.) Citation

Hardwick, M., & Hardwick, M. (1964). The man who was Sherlock Holmes. Murray.

Chicago Style (17th ed.) Citation

Hardwick, Michael, and Mollie Hardwick. The Man Who Was Sherlock Holmes. London: Murray, 1964.

MLA (8th ed.) Citation

Hardwick, Michael, and Mollie Hardwick. The Man Who Was Sherlock Holmes. Murray, 1964.