APA (7th ed.) Citation

Cressman, E. R. (1985). The Prichard Formation of the lower part of the Belt Supergroup (middle Proterozoic), near Plains, Sanders County, Montana. U.S. Dept. of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Cressman, Earle Rupert. The Prichard Formation of the Lower Part of the Belt Supergroup (middle Proterozoic), Near Plains, Sanders County, Montana. [Reston, Va.]: U.S. Dept. of the Interior, Geological Survey, 1985.

MLA (9th ed.) Citation

Cressman, Earle Rupert. The Prichard Formation of the Lower Part of the Belt Supergroup (middle Proterozoic), Near Plains, Sanders County, Montana. U.S. Dept. of the Interior, Geological Survey, 1985.