APA (7th ed.) Citation

Sevon, W. D. (1989). Geology and mineral resources of Pike County, Pennsylvania. Commonwealth of Pennsylvania, Dept. of Environmental Resources, Topographic and Geologic Survey.

Chicago Style (17th ed.) Citation

Sevon, W. D. Geology and Mineral Resources of Pike County, Pennsylvania. Harrisburg: Commonwealth of Pennsylvania, Dept. of Environmental Resources, Topographic and Geologic Survey, 1989.

MLA (9th ed.) Citation

Sevon, W. D. Geology and Mineral Resources of Pike County, Pennsylvania. Commonwealth of Pennsylvania, Dept. of Environmental Resources, Topographic and Geologic Survey, 1989.