Singewald, Q. D. (1951). Geology and ore deposits of the upper Blue River area, Summit County, Colorado. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationSingewald, Q. D. Geology and Ore Deposits of the Upper Blue River Area, Summit County, Colorado. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1951.
MLA (9th ed.) CitationSingewald, Q. D. Geology and Ore Deposits of the Upper Blue River Area, Summit County, Colorado. United States Department of the Interior, Geological Survey, 1951.
Warning: These citations may not always be 100% accurate.