Mugel, D. N. (2016). Geology and mining history of the Southeast Missouri Barite District and the Valles Mines, Washington, Jefferson, and St. Francois Counties, Missouri. U.S. Department of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationMugel, Douglas N. Geology and Mining History of the Southeast Missouri Barite District and the Valles Mines, Washington, Jefferson, and St. Francois Counties, Missouri. Reston, Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2016.
MLA (9th ed.) CitationMugel, Douglas N. Geology and Mining History of the Southeast Missouri Barite District and the Valles Mines, Washington, Jefferson, and St. Francois Counties, Missouri. U.S. Department of the Interior, U.S. Geological Survey, 2016.
Warning: These citations may not always be 100% accurate.