APA (7th ed.) Citation

Doyle, A. C. (2001). A study in scarlet. Penguin.

Chicago Style (17th ed.) Citation

Doyle, Arthur Conan. A Study in Scarlet. London: Penguin, 2001.

MLA (9th ed.) Citation

Doyle, Arthur Conan. A Study in Scarlet. Penguin, 2001.

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