Cressman, E. R., & Noger, M. C. (1981). Geologic mapping of Kentucky: A history and evaluation of the Kentucky Geological Survey-U.S. Geological Survey mapping program, 1960-1978. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationCressman, Earle Rupert, and Martin C. Noger. Geologic Mapping of Kentucky: A History and Evaluation of the Kentucky Geological Survey-U.S. Geological Survey Mapping Program, 1960-1978. [Reston, Virginia]: United States Department of the Interior, Geological Survey, 1981.
MLA (9th ed.) CitationCressman, Earle Rupert, and Martin C. Noger. Geologic Mapping of Kentucky: A History and Evaluation of the Kentucky Geological Survey-U.S. Geological Survey Mapping Program, 1960-1978. United States Department of the Interior, Geological Survey, 1981.