APA (7th ed.) Citation

Kennedy, W. J., Cobban, W. A., & Landman, N. H. (1996). Two species of Placenticeras (Ammonitina) from the Upper Cretaceous (Campanian) of the Western Interior of the United States. American Museum of Natural History.

Chicago Style (17th ed.) Citation

Kennedy, William J., William A. Cobban, and Neil H. Landman. Two Species of Placenticeras (Ammonitina) from the Upper Cretaceous (Campanian) of the Western Interior of the United States. New York, N.Y: American Museum of Natural History, 1996.

MLA (9th ed.) Citation

Kennedy, William J., et al. Two Species of Placenticeras (Ammonitina) from the Upper Cretaceous (Campanian) of the Western Interior of the United States. American Museum of Natural History, 1996.