APA (7th ed.) Citation

Gillihan, S. W., & Byers, B. E. (2001). Evening grosbeak: Coccothraustes vespertinus. Birds of North America.

Chicago Style (17th ed.) Citation

Gillihan, Scott W., and Bruce E. Byers. Evening Grosbeak: Coccothraustes Vespertinus. Philadelphia, PA: Birds of North America, 2001.

MLA (9th ed.) Citation

Gillihan, Scott W., and Bruce E. Byers. Evening Grosbeak: Coccothraustes Vespertinus. Birds of North America, 2001.