Geological Survey (U.S.), National Assessment of Oil and Gas Project (U.S.), & Anna, L. O. (2008). Assessment of undiscovered oil and gas resources of the Williston Basin province of North Dakota, Montana, and South Dakota, 2008. U.S. Dept. of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), National Assessment of Oil and Gas Project (U.S.), and Lawrence O. Anna. Assessment of Undiscovered Oil and Gas Resources of the Williston Basin Province of North Dakota, Montana, and South Dakota, 2008. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2008.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Assessment of Undiscovered Oil and Gas Resources of the Williston Basin Province of North Dakota, Montana, and South Dakota, 2008. U.S. Dept. of the Interior, U.S. Geological Survey, 2008.