Pennsylvania. Bureau of Topographic and Geologic Survey, Balogh, L. J., Petro, J., & Sarno, G. L. (1983). Natural gas pipelines and crude oil pipelines of Pennsylvania: 1:500,000. The Bureau.
Chicago Style (17th ed.) CitationPennsylvania. Bureau of Topographic and Geologic Survey, Lajos J. Balogh, John Petro, and Geary L. Sarno. Natural Gas Pipelines and Crude Oil Pipelines of Pennsylvania: 1:500,000. [Harrisburg?]: The Bureau, 1983.
MLA (9th ed.) CitationPennsylvania. Bureau of Topographic and Geologic Survey, et al. Natural Gas Pipelines and Crude Oil Pipelines of Pennsylvania: 1:500,000. The Bureau, 1983.
Warning: These citations may not always be 100% accurate.