Cita APA

Gill, F. B. 1., & Coe, J. E. (1995). Ornithology (2. edition.). New York: W. H. Freeman and Company.

Citación estilo Chicago

Gill, Frank B. 1941-, y James E. Coe. Ornithology. 2. edition. New York: W. H. Freeman and Company, 1995.

Cita MLA

Gill, Frank B. 1941-, y James E. Coe. Ornithology. 2. edition. New York: W. H. Freeman and Company, 1995.