APA (7th ed.) Citation

Dickens, C., Cox, A. J., & Wilson, A. (1986). The mystery of Edwin Drood. Penguin Books.

Chicago Style (17th ed.) Citation

Dickens, Charles, Arthur J. Cox, and Angus Wilson. The Mystery of Edwin Drood. Harmondsworth [etc.]: Penguin Books, 1986.

MLA (9th ed.) Citation

Dickens, Charles, et al. The Mystery of Edwin Drood. Penguin Books, 1986.