Luft, S. J. (1976). Geologic map of the Claysville quadrangle, northeastern Kentucky. U.S. Geological Survey.
Chicago Style (17th ed.) CitationLuft, Stanley Jeremie. Geologic Map of the Claysville Quadrangle, Northeastern Kentucky. Reston, Va.: U.S. Geological Survey, 1976.
MLA (9th ed.) CitationLuft, Stanley Jeremie. Geologic Map of the Claysville Quadrangle, Northeastern Kentucky. U.S. Geological Survey, 1976.
Warning: These citations may not always be 100% accurate.