APA Citation

Dunning, J. S., & Ridgely, R. S. (1987). South American Birds: A photographic aid to identification. Pennsylvania: Harrowood.

Chicago Style Citation

Dunning, John S., and Robert S. Ridgely. South American Birds: A Photographic Aid to Identification. Pennsylvania: Harrowood, 1987.

MLA Citation

Dunning, John S., and Robert S. Ridgely. South American Birds: A Photographic Aid to Identification. Pennsylvania: Harrowood, 1987.

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