APA-referens

Colbert, E. H. (1984). Evolution of the vertebrates: A history of the backboned animals through time (2.).

Chicago-stil citat

Colbert, Edwin H. Evolution of the Vertebrates: A History of the Backboned Animals Through Time. 2. Wiley Eastern Limited, New Delhi, 1984.

MLA-referens

Colbert, Edwin H. Evolution of the Vertebrates: A History of the Backboned Animals Through Time. 2. 1984.