APA (7th ed.) Citation

Sohl, N. F., & Kollmann, H. A. (1985). Cretaceous Actaeonellid gastropods from the western hemisphere. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Sohl, Norman F., and Heinz A. Kollmann. Cretaceous Actaeonellid Gastropods from the Western Hemisphere. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 1985.

MLA (9th ed.) Citation

Sohl, Norman F., and Heinz A. Kollmann. Cretaceous Actaeonellid Gastropods from the Western Hemisphere. U.S. Dept. of the Interior, U.S. Geological Survey, 1985.