Olson, J. C. (1983). Geologic and structural maps and sections of the Marshall Pass Mining District, Saguache, Gunnison, and Chaffee Counties, Colorado. U.S. Geological Survey.
Chicago Style (17th ed.) CitationOlson, Jerry Chipman. Geologic and Structural Maps and Sections of the Marshall Pass Mining District, Saguache, Gunnison, and Chaffee Counties, Colorado. Reston, Va.: U.S. Geological Survey, 1983.
MLA (8th ed.) CitationOlson, Jerry Chipman. Geologic and Structural Maps and Sections of the Marshall Pass Mining District, Saguache, Gunnison, and Chaffee Counties, Colorado. U.S. Geological Survey, 1983.
Warning: These citations may not always be 100% accurate.