Detra, D. E., & Cooley, E. F. (1980). Distribution and abundance of bismuth, tin and tungsten in nonmagnetic heavy-mineral concentrate samples, Chignik and Sutwik Island quadrangles, Alaska. U.S. Geological Survey.
Chicago Style (17th ed.) CitationDetra, D. E., and Elmo F. Cooley. Distribution and Abundance of Bismuth, Tin and Tungsten in Nonmagnetic Heavy-mineral Concentrate Samples, Chignik and Sutwik Island Quadrangles, Alaska. Reston, Va.: U.S. Geological Survey, 1980.
MLA (9th ed.) CitationDetra, D. E., and Elmo F. Cooley. Distribution and Abundance of Bismuth, Tin and Tungsten in Nonmagnetic Heavy-mineral Concentrate Samples, Chignik and Sutwik Island Quadrangles, Alaska. U.S. Geological Survey, 1980.
Warning: These citations may not always be 100% accurate.