Cita APA (7a ed.)

Wetmore, A. (1951). A Revised Classification for the Birds of the World. Smithsonian Institution.

Cita Chicago Style (17a ed.)

Wetmore, Alexander. A Revised Classification for the Birds of the World. Washington: Smithsonian Institution, 1951.

Cita MLA (9a ed.)

Wetmore, Alexander. A Revised Classification for the Birds of the World. Smithsonian Institution, 1951.