Cargill, S. M. (1976). PACER: Data entry, retrieval, and update for the National Coal Resources Data System (phase I). United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationCargill, Simon M. PACER: Data Entry, Retrieval, and Update for the National Coal Resources Data System (phase I). Washington: United States Department of the Interior, Geological Survey, 1976.
MLA (9th ed.) CitationCargill, Simon M. PACER: Data Entry, Retrieval, and Update for the National Coal Resources Data System (phase I). United States Department of the Interior, Geological Survey, 1976.
Warning: These citations may not always be 100% accurate.