Smith, J. H. (1963). Geology of the Cumberland Falls quadrangle, Kentucky. U.S. Geological Survey.
Chicago Style (17th ed.) CitationSmith, J. Hiram. Geology of the Cumberland Falls Quadrangle, Kentucky. Reston, Va.: U.S. Geological Survey, 1963.
MLA (9th ed.) CitationSmith, J. Hiram. Geology of the Cumberland Falls Quadrangle, Kentucky. U.S. Geological Survey, 1963.
Warning: These citations may not always be 100% accurate.