Sheridan, D. M., & Raymond, W. H. (1984). Precambrian deposits of zinc-copper-lead sulfides and zinc spinel (gahnite) in Colorado. Department of the Interior, United States Geological Survey.
Chicago Style (17th ed.) CitationSheridan, Douglas M., and William H. Raymond. Precambrian Deposits of Zinc-copper-lead Sulfides and Zinc Spinel (gahnite) in Colorado. [Reston, Va.]: Department of the Interior, United States Geological Survey, 1984.
MLA (9th ed.) CitationSheridan, Douglas M., and William H. Raymond. Precambrian Deposits of Zinc-copper-lead Sulfides and Zinc Spinel (gahnite) in Colorado. Department of the Interior, United States Geological Survey, 1984.
Warning: These citations may not always be 100% accurate.