APA (7th ed.) Citation

Ries, H. (1903). The clays of the United States east of the Mississippi River. Department of the Interior, United States Geological Survey.

Chicago Style (17th ed.) Citation

Ries, Heinrich. The Clays of the United States East of the Mississippi River. Washington: Department of the Interior, United States Geological Survey, 1903.

MLA (9th ed.) Citation

Ries, Heinrich. The Clays of the United States East of the Mississippi River. Department of the Interior, United States Geological Survey, 1903.