Cita APA

Simpson, G. G. Principles of animal taxonomy / George Gaylord Simpson. New York : Columbia University Press.

Citación estilo Chicago

Simpson, George Gaylord. Principles of Animal Taxonomy / George Gaylord Simpson. New York : Columbia University Press.

Cita MLA

Simpson, George Gaylord. Principles of Animal Taxonomy / George Gaylord Simpson. New York : Columbia University Press.