APA Edition Citation

Colbert, E. H. (1969). Evolution of vertebrates: A history of the backboned animals through time (Ed.2.).

Chicago Edition Citation

Colbert, Edwin H. Evolution of Vertebrates: A History of the Backboned Animals Through Time. Ed.2. New Delhi, Wiley Eastern, 1969.

MLA Edition Citation

Colbert, Edwin H. Evolution of Vertebrates: A History of the Backboned Animals Through Time. Ed.2. 1969.