APA (7th ed.) Citation

Simpson, G. G. (1929). Paleocene and Lower Eocene mammals of Europe. American Museum of Natural History.

Chicago Style (17th ed.) Citation

Simpson, George G. Paleocene and Lower Eocene Mammals of Europe. New York City: American Museum of Natural History, 1929.

MLA (9th ed.) Citation

Simpson, George G. Paleocene and Lower Eocene Mammals of Europe. American Museum of Natural History, 1929.