APA (7th ed.) Citation

Peterson, R. T., & Hoglund, R. (2002). Roger Tory Peterson's book of colors: A book for little bird-watchers. Universe ; Troika.

Chicago Style (17th ed.) Citation

Peterson, Roger Tory, and Rudy Hoglund. Roger Tory Peterson's Book of Colors: A Book for Little Bird-watchers. New York : London: Universe ; Troika, 2002.

MLA (9th ed.) Citation

Peterson, Roger Tory, and Rudy Hoglund. Roger Tory Peterson's Book of Colors: A Book for Little Bird-watchers. Universe ; Troika, 2002.