APA (7th ed.) Citation

Sibley, D. A. (2016). Sibley birds west: Field guide to birds of western North America (Second edition.). Alfred A. Knopf.

Chicago Style (17th ed.) Citation

Sibley, David Allen. Sibley Birds West: Field Guide to Birds of Western North America. Second edition. New York: Alfred A. Knopf, 2016.

MLA (9th ed.) Citation

Sibley, David Allen. Sibley Birds West: Field Guide to Birds of Western North America. Second edition. Alfred A. Knopf, 2016.