APA (7th ed.) Citation

Landman, N. H., & Cobban, W. A. (2003). Ammonites from the Upper part of the Pierre Shale and Fox Hills Formation of Colorado. American Museum of Natural History.

Chicago Style (17th ed.) Citation

Landman, Neil H., and William A. Cobban. Ammonites from the Upper Part of the Pierre Shale and Fox Hills Formation of Colorado. New York, NY: American Museum of Natural History, 2003.

MLA (9th ed.) Citation

Landman, Neil H., and William A. Cobban. Ammonites from the Upper Part of the Pierre Shale and Fox Hills Formation of Colorado. American Museum of Natural History, 2003.