APA (7th ed.) Citation

Doyle, A. C., Brett, J., & Hardwicke, E. (2004). Das Zeichen 4. Polyband.

Chicago Style (17th ed.) Citation

Doyle, Arthur Conan, Jeremy Brett, and Edward Hardwicke. Das Zeichen 4. München: Polyband, 2004.

MLA (9th ed.) Citation

Doyle, Arthur Conan, et al. Das Zeichen 4. Polyband, 2004.