APA (7th ed.) Citation

Skema, V. W. (1988). Coal resources of Westmoreland County, Pennsylvania. Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey.

Chicago Style (17th ed.) Citation

Skema, Viktoras W. Coal Resources of Westmoreland County, Pennsylvania. Harrisburg: Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey, 1988.

MLA (8th ed.) Citation

Skema, Viktoras W. Coal Resources of Westmoreland County, Pennsylvania. Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey, 1988.