APA (7th ed.) Citation

Reader's Digest Association. (1990). Book of North American birds. Reader's Digest Association.

Chicago Style (17th ed.) Citation

Reader's Digest Association. Book of North American Birds. Pleasantville, N.Y.: Reader's Digest Association, 1990.

MLA (9th ed.) Citation

Reader's Digest Association. Book of North American Birds. Reader's Digest Association, 1990.