APA (7th ed.) Citation

Sheldon, R. P. (1957). Physical stratigraphy of the Phosphoria formation in northwestern Wyoming. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Sheldon, Richard Porter. Physical Stratigraphy of the Phosphoria Formation in Northwestern Wyoming. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1957.

MLA (9th ed.) Citation

Sheldon, Richard Porter. Physical Stratigraphy of the Phosphoria Formation in Northwestern Wyoming. United States Department of the Interior, Geological Survey, 1957.