Pennsylvania. Bureau of Topographic and Geologic Survey. Progress report. Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey.
Chicago Style (17th ed.) CitationPennsylvania. Bureau of Topographic and Geologic Survey. Progress Report. Harrisburg: Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey.
MLA (9th ed.) CitationPennsylvania. Bureau of Topographic and Geologic Survey. Progress Report. Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey.
Warning: These citations may not always be 100% accurate.