APA (7th ed.) Citation

Hill, G. E. (1995). Black-headed grosbeak: Pheucticus melanocephalus. American Ornithologists' Union ; The Academy of Natural Sciences.

Chicago Style (17th ed.) Citation

Hill, Geoffrey E. Black-headed Grosbeak: Pheucticus Melanocephalus. Washington, D.C. : Philadelphia, PA: American Ornithologists' Union ; The Academy of Natural Sciences, 1995.

MLA (9th ed.) Citation

Hill, Geoffrey E. Black-headed Grosbeak: Pheucticus Melanocephalus. American Ornithologists' Union ; The Academy of Natural Sciences, 1995.