Cita APA (7th ed.)
Doyle, A. C. The Sign of the Four and The Memoirs of Sherlock Holmes.
Cita Chicago (17th ed.)Doyle, A. C. The Sign of the Four and The Memoirs of Sherlock Holmes.
Cita MLA (8th ed.)Doyle, A. C. The Sign of the Four and The Memoirs of Sherlock Holmes.
Atenció: Aquestes cites poden no estar 100% correctes.