Inners, J. D. (1978). Geology and mineral resources of the Berwick quadrangle, Luzerne and Columbia counties, Pennsylvania. Harrisburg: Commonwealth of Pennsylvania, Department of Environmental Resources, Bureau of Topographic and Geologic Survey.
Chicago Style CitationInners, Jon D. Geology and Mineral Resources of the Berwick Quadrangle, Luzerne and Columbia Counties, Pennsylvania. Harrisburg: Commonwealth of Pennsylvania, Department of Environmental Resources, Bureau of Topographic and Geologic Survey, 1978.
MLA CitationInners, Jon D. Geology and Mineral Resources of the Berwick Quadrangle, Luzerne and Columbia Counties, Pennsylvania. Harrisburg: Commonwealth of Pennsylvania, Department of Environmental Resources, Bureau of Topographic and Geologic Survey, 1978.