Geological Survey (U.S.) & Pennsylvania. Bureau of Topographic and Geologic Survey. (1991). Carbon County, Pennsylvania. U.S. Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.) and Pennsylvania. Bureau of Topographic and Geologic Survey. Carbon County, Pennsylvania. Reston, Va. : Denver, Colo.: U.S. Geological Survey, 1991.
MLA (9th ed.) CitationGeological Survey (U.S.) and Pennsylvania. Bureau of Topographic and Geologic Survey. Carbon County, Pennsylvania. U.S. Geological Survey, 1991.
Warning: These citations may not always be 100% accurate.