Spencer, M. A. (1986). Coal resources of the Cedar Coulee 7 1/2-minute quadrangle, Richland and Roosevelt Counties, Montana. Montana Bureau of Mines and Geology.
Chicago Style (17th ed.) CitationSpencer, Mary Alice. Coal Resources of the Cedar Coulee 7 1/2-minute Quadrangle, Richland and Roosevelt Counties, Montana. [Butte]: Montana Bureau of Mines and Geology, 1986.
MLA (9th ed.) CitationSpencer, Mary Alice. Coal Resources of the Cedar Coulee 7 1/2-minute Quadrangle, Richland and Roosevelt Counties, Montana. Montana Bureau of Mines and Geology, 1986.
Warning: These citations may not always be 100% accurate.