Cita APA (7a ed.)

Childers, E. (2011). The riddle of the sands: A record of secret service. Penguin Books.

Cita Chicago Style (17a ed.)

Childers, Erskine. The Riddle of the Sands: A Record of Secret Service. New York: Penguin Books, 2011.

Cita MLA (8a ed.)

Childers, Erskine. The Riddle of the Sands: A Record of Secret Service. Penguin Books, 2011.

Precaución: Estas citas no son 100% exactas.