APA (7th ed.) Citation

Klepper, M. R., Ruppel, E. T., & Weeks, R. A. (1957). Geology of the southern Elkhorn Mountains, Jefferson and Broadwater Counties, Montana. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Klepper, Montis Ruhl, Edward Thompson Ruppel, and R. A. Weeks. Geology of the Southern Elkhorn Mountains, Jefferson and Broadwater Counties, Montana. Washington: United States Department of the Interior, Geological Survey, 1957.

MLA (9th ed.) Citation

Klepper, Montis Ruhl, et al. Geology of the Southern Elkhorn Mountains, Jefferson and Broadwater Counties, Montana. United States Department of the Interior, Geological Survey, 1957.