APA-referens (7:e uppl.)

Colbert, E. H. (1969). Evolution of the vertebrates (2nd ed.). John Wiley & Sons.

Chicago-referens (17:e uppl.)

Colbert, Edwin H. Evolution of the Vertebrates. 2nd ed. New York: John Wiley & Sons, 1969.

MLA-referens (9:e uppl.)

Colbert, Edwin H. Evolution of the Vertebrates. 2nd ed. John Wiley & Sons, 1969.