Cita APA (7a ed.)

Burton, J. A. (1973). Birds of the tropics. Orbis Publishing.

Cita Chicago Style (17a ed.)

Burton, John A. Birds of the Tropics. London: Orbis Publishing, 1973.

Cita MLA (8a ed.)

Burton, John A. Birds of the Tropics. Orbis Publishing, 1973.