APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (8th ed.) Citation

Sibley, David. The Sibley Guide to Birds. Second edition. Alfred A. Knopf, 2014.

Warning: These citations may not always be 100% accurate.