Cita APA (7a ed.)

Follett, K. (1981). The key to Rebecca. Penguin Books.

Cita Chicago Style (17a ed.)

Follett, Ken. The Key to Rebecca. New York [etc.]: Penguin Books, 1981.

Cita MLA (9a ed.)

Follett, Ken. The Key to Rebecca. Penguin Books, 1981.