APA (7th ed.) Citation

Ellis, M. S. (2002). Quality of economically extractable coal beds in the Gillette coal field as compared with other Tertiary coal beds in the Powder River Basin, Wyoming and Montana (Version 1.0.). U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Ellis, Margaret S. Quality of Economically Extractable Coal Beds in the Gillette Coal Field as Compared with Other Tertiary Coal Beds in the Powder River Basin, Wyoming and Montana. Version 1.0. [Denver, Colo.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2002.

MLA (9th ed.) Citation

Ellis, Margaret S. Quality of Economically Extractable Coal Beds in the Gillette Coal Field as Compared with Other Tertiary Coal Beds in the Powder River Basin, Wyoming and Montana. Version 1.0. U.S. Dept. of the Interior, U.S. Geological Survey, 2002.