APA (7th ed.) Citation

Simpson, G. G. (1937). A new Jurassic mammal. American Museum of Natural History.

Chicago Style (17th ed.) Citation

Simpson, George Gaylord. A New Jurassic Mammal. New York City: American Museum of Natural History, 1937.

MLA (9th ed.) Citation

Simpson, George Gaylord. A New Jurassic Mammal. American Museum of Natural History, 1937.