Englund, K. J. (1966). Geologic map of the Ketchen quadrangle, Tennessee-Kentucky. U.S. Geological Survey.
Chicago Style (17th ed.) CitationEnglund, Kenneth John. Geologic Map of the Ketchen Quadrangle, Tennessee-Kentucky. Washington, D.C.: U.S. Geological Survey, 1966.
MLA (9th ed.) CitationEnglund, Kenneth John. Geologic Map of the Ketchen Quadrangle, Tennessee-Kentucky. U.S. Geological Survey, 1966.
Warning: These citations may not always be 100% accurate.