APA (7th ed.) Citation

Berkas, W. R. (2000). Occurrence, distribution, and concentration of hydrocarbons in and near the Shell Valley Aquifer, North Dakota. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Berkas, Wayne R. Occurrence, Distribution, and Concentration of Hydrocarbons in and Near the Shell Valley Aquifer, North Dakota. Bismarck, North Dakota: U.S. Department of the Interior, U.S. Geological Survey, 2000.

MLA (9th ed.) Citation

Berkas, Wayne R. Occurrence, Distribution, and Concentration of Hydrocarbons in and Near the Shell Valley Aquifer, North Dakota. U.S. Department of the Interior, U.S. Geological Survey, 2000.