Landman, N. H., Johnson, R. O., & Edwards, L. A. Cephalopods from the Cretaceous Tertiary boundary interval on the Atlantic Coastal Plain: With a description of the highest ammonite zones in North America. American Museum of Natural History.
Chicago-Zitierstil (17. Ausg.)Landman, Neil H., Ralph O. Johnson, und Lucy Ames Edwards. Cephalopods from the Cretaceous Tertiary Boundary Interval on the Atlantic Coastal Plain: With a Description of the Highest Ammonite Zones in North America. New York, NY: American Museum of Natural History.
MLA-Zitierstil (9. Ausg.)Landman, Neil H., et al. Cephalopods from the Cretaceous Tertiary Boundary Interval on the Atlantic Coastal Plain: With a Description of the Highest Ammonite Zones in North America. American Museum of Natural History.