Hendricks, T. A. (1939). Geology and fuel resources of the southern part of the Oklahoma coal field. United States Department of the Interior, Geological Survey.
Chicago Style (17th ed.) CitationHendricks, Thomas Andrews. Geology and Fuel Resources of the Southern Part of the Oklahoma Coal Field. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1939.
MLA (9th ed.) CitationHendricks, Thomas Andrews. Geology and Fuel Resources of the Southern Part of the Oklahoma Coal Field. United States Department of the Interior, Geological Survey, 1939.
Warning: These citations may not always be 100% accurate.