Cita APA (7a ed.)

Simpson, G. G. (1943). Criteria for genera, species and subspecies in zoology and paleozoology.

Cita Chicago Style (17a ed.)

Simpson, George Gaylord. Criteria for Genera, Species and Subspecies in Zoology and Paleozoology. 1943.

Cita MLA (8a ed.)

Simpson, George Gaylord. Criteria for Genera, Species and Subspecies in Zoology and Paleozoology. 1943.