APA (7th ed.) Citation

Lowther, P. E., Douglas, H. D., & Gratto-Trevor, C. L. (2001). Willet: Catoptrophorus semipalmatus. Birds of North America, Inc..

Chicago Style (17th ed.) Citation

Lowther, Peter E., Hector D. Douglas, and Cheri Lynn Gratto-Trevor. Willet: Catoptrophorus Semipalmatus. Philadelphia, PA: Birds of North America, Inc., 2001.

MLA (9th ed.) Citation

Lowther, Peter E., et al. Willet: Catoptrophorus Semipalmatus. Birds of North America, Inc., 2001.