APA (7th ed.) Citation

Johns, W. M. (1980). [Gypsum deposits in Beaverhead County, Montana]. Montana Bureau of Mines and Geology.

Chicago Style (17th ed.) Citation

Johns, Willis M. [Gypsum Deposits in Beaverhead County, Montana]. [Butte]: Montana Bureau of Mines and Geology, 1980.

MLA (9th ed.) Citation

Johns, Willis M. [Gypsum Deposits in Beaverhead County, Montana]. Montana Bureau of Mines and Geology, 1980.