APA (7th ed.) Citation

Stephenson, L. W. (1938). A new upper Cretaceous Rudistid from the Kemp Clay of Texas. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Stephenson, Lloyd William. A New Upper Cretaceous Rudistid from the Kemp Clay of Texas. Washington: United States Department of the Interior, Geological Survey, 1938.

MLA (9th ed.) Citation

Stephenson, Lloyd William. A New Upper Cretaceous Rudistid from the Kemp Clay of Texas. United States Department of the Interior, Geological Survey, 1938.