APA (7th ed.) Citation

Hennessy, J. V. (2017). Sherlock Holmes: A secret history. Algora Publishing.

Chicago Style (17th ed.) Citation

Hennessy, John V. Sherlock Holmes: A Secret History. New York: Algora Publishing, 2017.

MLA (9th ed.) Citation

Hennessy, John V. Sherlock Holmes: A Secret History. Algora Publishing, 2017.