Cita APA (7a ed.)

Wylie, P. (1970). The spy who spoke porpoise. Pyramid Books.

Cita Chicago Style (17a ed.)

Wylie, Philip. The Spy Who Spoke Porpoise. New York: Pyramid Books, 1970.

Cita MLA (9a ed.)

Wylie, Philip. The Spy Who Spoke Porpoise. Pyramid Books, 1970.