Cita APA (7a ed.)

Watson,George E. (1975). Birds of the Antartic and Sub-Antartic. American Geographysical Union.

Cita Chicago Style (17a ed.)

Watson,George E. Birds of the Antartic and Sub-Antartic. Washington - ARGE: American Geographysical Union, 1975.

Cita MLA (8a ed.)

Watson,George E. Birds of the Antartic and Sub-Antartic. American Geographysical Union, 1975.