Cita APA (7a ed.)

Keyes, M. (2006). Further under the duvet. Penguin Books.

Cita Chicago Style (17a ed.)

Keyes, Marian. Further Under the Duvet. London: Penguin Books, 2006.

Cita MLA (9a ed.)

Keyes, Marian. Further Under the Duvet. Penguin Books, 2006.