APA (7th ed.) Citation

Beedy, E. C., & Hamilton, W. J. (1999). Tricolored blackbird: Agelaius tricolor. Birds of North America, Inc..

Chicago Style (17th ed.) Citation

Beedy, Edward C., and William J. Hamilton. Tricolored Blackbird: Agelaius Tricolor. Philadelphia, PA: Birds of North America, Inc., 1999.

MLA (9th ed.) Citation

Beedy, Edward C., and William J. Hamilton. Tricolored Blackbird: Agelaius Tricolor. Birds of North America, Inc., 1999.