Cita APA (7th ed.)

Colbert, E. H. (1980). Evolution of the vertebrates (3rd ed.). John Wiley & Sons.

Cita Chicago (17th ed.)

Colbert, Edwin H. Evolution of the Vertebrates. 3rd ed. New York ; Chichester: John Wiley & Sons, 1980.

Cita MLA (9th ed.)

Colbert, Edwin H. Evolution of the Vertebrates. 3rd ed. John Wiley & Sons, 1980.