Butts, C. (1917). Coals in the area between Bon Air and Clifty, Tennessee. Department of the Interior, United States Geological Survey.
Chicago Style (17th ed.) CitationButts, Charles. Coals in the Area Between Bon Air and Clifty, Tennessee. [Washington, D.C.]: Department of the Interior, United States Geological Survey, 1917.
MLA (9th ed.) CitationButts, Charles. Coals in the Area Between Bon Air and Clifty, Tennessee. Department of the Interior, United States Geological Survey, 1917.
Warning: These citations may not always be 100% accurate.