APA (7th ed.) Citation

Berg, T. M. (1986). Stratigraphic correlation chart of Pennsylvania (Rev.). Commonwealth of Pennsylvania, Dept. of Environmental Resources, Topographic and Geologic Survey.

Chicago Style (17th ed.) Citation

Berg, Thomas M. Stratigraphic Correlation Chart of Pennsylvania. Rev. Harrisburg, Pa.: Commonwealth of Pennsylvania, Dept. of Environmental Resources, Topographic and Geologic Survey, 1986.

MLA (9th ed.) Citation

Berg, Thomas M. Stratigraphic Correlation Chart of Pennsylvania. Rev. Commonwealth of Pennsylvania, Dept. of Environmental Resources, Topographic and Geologic Survey, 1986.