APA (7th ed.) Citation

Averitt, P. (1970). Stripping-coal resources of the United States--January 1, 1970. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Averitt, Paul. Stripping-coal Resources of the United States--January 1, 1970. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1970.

MLA (9th ed.) Citation

Averitt, Paul. Stripping-coal Resources of the United States--January 1, 1970. United States Department of the Interior, Geological Survey, 1970.