APA (7th ed.) Citation

Trumbull, J. (1957). Coal resources of Oklahoma. United States Department of the Interior, Geological Survey.

Chicago Style (17th ed.) Citation

Trumbull, James. Coal Resources of Oklahoma. [Washington, D.C.]: United States Department of the Interior, Geological Survey, 1957.

MLA (9th ed.) Citation

Trumbull, James. Coal Resources of Oklahoma. United States Department of the Interior, Geological Survey, 1957.

Warning: These citations may not always be 100% accurate.