APA (7th ed.) Citation

Pyle, P., Jones, S. L., & Ruth, J. M. (2008). Molt and aging criteria for four North American grassland passerines. U.S. Fish & Wildlife Service.

Chicago Style (17th ed.) Citation

Pyle, Peter, Stephanie L. Jones, and Janet M. Ruth. Molt and Aging Criteria for Four North American Grassland Passerines. Shepherdstown, WV: U.S. Fish & Wildlife Service, 2008.

MLA (9th ed.) Citation

Pyle, Peter, et al. Molt and Aging Criteria for Four North American Grassland Passerines. U.S. Fish & Wildlife Service, 2008.