Schmidt, R. G. (1978). Rocks and mineral resources of the Wolf Creek area, Lewis and Clark and Cascade counties, Montana: A descriptive report on an area in the disturbed belt along the eastern front of the northern Rocky Mountains in Western Montana. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationSchmidt, Robert George. Rocks and Mineral Resources of the Wolf Creek Area, Lewis and Clark and Cascade Counties, Montana: A Descriptive Report on an Area in the Disturbed Belt Along the Eastern Front of the Northern Rocky Mountains in Western Montana. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1978.
MLA (9th ed.) CitationSchmidt, Robert George. Rocks and Mineral Resources of the Wolf Creek Area, Lewis and Clark and Cascade Counties, Montana: A Descriptive Report on an Area in the Disturbed Belt Along the Eastern Front of the Northern Rocky Mountains in Western Montana. United States Department of the Interior, Geological Survey, 1978.