Kupfer, D. H. (1963). Geology of the Calamity Peak Area Custer County South Dakota. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationKupfer, Donald H. Geology of the Calamity Peak Area Custer County South Dakota. Washington, D.C.: United States Department of the Interior, Geological Survey, 1963.
MLA (9th ed.) CitationKupfer, Donald H. Geology of the Calamity Peak Area Custer County South Dakota. United States Department of the Interior, Geological Survey, 1963.
Warning: These citations may not always be 100% accurate.