Cita APA

Gill, F. B. (1995). Ornithology (2nd ed.). W.H.Freeman.

Chicago Edition Citation

Gill, Frank B. Ornithology. 2nd ed. New York: W.H.Freeman, 1995.

Cita MLA

Gill, Frank B. Ornithology. 2nd ed. W.H.Freeman, 1995.