APA (7th ed.) Citation

Doyle, A. C. (1974). The sign of four. J. Murray, : Cape.

Chicago Style (17th ed.) Citation

Doyle, Arthur Conan. The Sign of Four. London: J. Murray, : Cape, 1974.

MLA (8th ed.) Citation

Doyle, Arthur Conan. The Sign of Four. J. Murray, : Cape, 1974.