Cita APA

Johnsgard, P. A. (1993). Cormorants, darters and pelicans of the world. Washington, D.C.: Smithsonian Institution.

Citación estilo Chicago

Johnsgard, Paul A. Cormorants, Darters and Pelicans of the World. Washington, D.C.: Smithsonian Institution, 1993.

Cita MLA

Johnsgard, Paul A. Cormorants, Darters and Pelicans of the World. Washington, D.C.: Smithsonian Institution, 1993.

Precaución: Estas citas no son 100% exactas.