APA (7th ed.) Citation

Simpson, G. G. (1951). American Cretaceous insectivores. American Museum of Natural History.

Chicago Style (17th ed.) Citation

Simpson, George Gaylord. American Cretaceous Insectivores. New York, N.Y: American Museum of Natural History, 1951.

MLA (9th ed.) Citation

Simpson, George Gaylord. American Cretaceous Insectivores. American Museum of Natural History, 1951.