Stone, R. W. (1932). Geology and mineral resources of Greene County, Pennsylvania. Department of Internal Affairs, Topographic and Geologic Survey.
Chicago Style (17th ed.) CitationStone, Ralph W. Geology and Mineral Resources of Greene County, Pennsylvania. Harrisburg: Department of Internal Affairs, Topographic and Geologic Survey, 1932.
MLA (9th ed.) CitationStone, Ralph W. Geology and Mineral Resources of Greene County, Pennsylvania. Department of Internal Affairs, Topographic and Geologic Survey, 1932.
Warning: These citations may not always be 100% accurate.