APA (7th ed.) Citation

Knechtel, M. M., & Patterson, S. H. (1962). Bentonite deposits of the northern Black Hills district Wyoming, Montana, and South Dakota. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Knechtel, Maxwell M., and Sam H. Patterson. Bentonite Deposits of the Northern Black Hills District Wyoming, Montana, and South Dakota. Washington, D.C.: United States Department of the Interior, Geological Survey, 1962.

MLA (9th ed.) Citation

Knechtel, Maxwell M., and Sam H. Patterson. Bentonite Deposits of the Northern Black Hills District Wyoming, Montana, and South Dakota. United States Department of the Interior, Geological Survey, 1962.