APA (7th ed.) Citation

Peterson, R. T. (1986). Peterson first guide to birds of North America. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Peterson, Roger Tory. Peterson First Guide to Birds of North America. Boston: Houghton Mifflin, 1986.

MLA (9th ed.) Citation

Peterson, Roger Tory. Peterson First Guide to Birds of North America. Houghton Mifflin, 1986.

Warning: These citations may not always be 100% accurate.