APA (7th ed.) Citation

Payne, L. X., & Pierce, E. P. (2002). Purple sandpiper: Calidris maritima. Birds of North America, Inc..

Chicago Style (17th ed.) Citation

Payne, Laura X., and Elin P. Pierce. Purple Sandpiper: Calidris Maritima. Philadelphia, Pa.: Birds of North America, Inc., 2002.

MLA (9th ed.) Citation

Payne, Laura X., and Elin P. Pierce. Purple Sandpiper: Calidris Maritima. Birds of North America, Inc., 2002.