APA (7th ed.) Citation

Sohl, N. F. (1967). Upper Cretaceous gastropods from the Pierre Shale at Red Bird, Wyoming. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Sohl, Norman F. Upper Cretaceous Gastropods from the Pierre Shale at Red Bird, Wyoming. Washington: U.S. Govt. Print. Off, 1967.

MLA (9th ed.) Citation

Sohl, Norman F. Upper Cretaceous Gastropods from the Pierre Shale at Red Bird, Wyoming. U.S. Govt. Print. Off, 1967.