APA (7th ed.) Citation

Weckstein, J. D., Kroodsma, D. E., & Faucett, R. C. (2002). Fox sparrow: Passerella iliaca. Birds of North America, Inc..

Chicago Style (17th ed.) Citation

Weckstein, Jason D., Donald E. Kroodsma, and Robert C. Faucett. Fox Sparrow: Passerella Iliaca. Philadelphia, Pa.: Birds of North America, Inc., 2002.

MLA (9th ed.) Citation

Weckstein, Jason D., et al. Fox Sparrow: Passerella Iliaca. Birds of North America, Inc., 2002.