Stone, R. W. (1905). Mineral resources of the Elders Ridge quadrangle, Pennsylvania. Department of the Interior, United States Geological Survey.
Chicago Style (17th ed.) CitationStone, Ralph W. Mineral Resources of the Elders Ridge Quadrangle, Pennsylvania. Washington, D.C.: Department of the Interior, United States Geological Survey, 1905.
MLA (9th ed.) CitationStone, Ralph W. Mineral Resources of the Elders Ridge Quadrangle, Pennsylvania. Department of the Interior, United States Geological Survey, 1905.
Warning: These citations may not always be 100% accurate.