Wood, G. H. (1972). Geologic map of anthracite-bearing rocks in the Pottsville quadrangle, Schuylkill County, Pennsylvania. The Survey.
Chicago Style (17th ed.) CitationWood, Gordon H. Geologic Map of Anthracite-bearing Rocks in the Pottsville Quadrangle, Schuylkill County, Pennsylvania. Washington, D.C.: The Survey, 1972.
MLA (9th ed.) CitationWood, Gordon H. Geologic Map of Anthracite-bearing Rocks in the Pottsville Quadrangle, Schuylkill County, Pennsylvania. The Survey, 1972.
Warning: These citations may not always be 100% accurate.