APA Citation

American Ornithologists' Union. (1957). Check-list of North American birds (5th ed.). [Ithaca, N.Y.].

Chicago Style Citation

American Ornithologists' Union. Check-list of North American Birds. 5th ed. [Ithaca, N.Y.], 1957.

MLA Citation

American Ornithologists' Union. Check-list of North American Birds. 5th ed. [Ithaca, N.Y.], 1957.

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