Cita APA (7a ed.)

Doyle, A. C., & Page, J. (2010). Sherlock Holmes: The sign of four. Oxford University Press.

Cita Chicago Style (17a ed.)

Doyle, Arthur Conan, y Jeremy Page. Sherlock Holmes: The Sign of Four. Oxford: Oxford University Press, 2010.

Cita MLA (8a ed.)

Doyle, Arthur Conan, y Jeremy Page. Sherlock Holmes: The Sign of Four. Oxford University Press, 2010.