Cita APA

Sibley, D. A. (2014). The Sibley guide to birds (Second edition.). New York: Alfred A. Knopf.

Citación estilo Chicago

Sibley, David Allen. The Sibley Guide to Birds. Second edition. New York: Alfred A. Knopf, 2014.

Cita MLA

Sibley, David Allen. The Sibley Guide to Birds. Second edition. New York: Alfred A. Knopf, 2014.