APA (7th ed.) Citation

Olson, H. W. (1940). Earthworms of New York State. American Museum of Natural History.

Chicago Style (17th ed.) Citation

Olson, Henry W. Earthworms of New York State. New York City: American Museum of Natural History, 1940.

MLA (9th ed.) Citation

Olson, Henry W. Earthworms of New York State. American Museum of Natural History, 1940.