APA (7th ed.) Citation

Simpson, G. G. (1937). New reptiles from the Eocene of South America. American Museum of Natural History.

Chicago Style (17th ed.) Citation

Simpson, George Gaylord. New Reptiles from the Eocene of South America. New York City: American Museum of Natural History, 1937.

MLA (9th ed.) Citation

Simpson, George Gaylord. New Reptiles from the Eocene of South America. American Museum of Natural History, 1937.