APA (7th ed.) Citation

Doyle, S. A. C. (2000). Sign of Four by Sir Arthur Conan Doyle. Chadwyck-Healey.

Chicago Style (17th ed.) Citation

Doyle, Sir Arthur Conan. Sign of Four by Sir Arthur Conan Doyle. Cambridge: Chadwyck-Healey, 2000.

MLA (9th ed.) Citation

Doyle, Sir Arthur Conan. Sign of Four by Sir Arthur Conan Doyle. Chadwyck-Healey, 2000.

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