Downey, J. S., & Dinwiddie, G. A. (1988). The regional aquifer system underlying the northern Great Plains in parts of Montana, North Dakota, South Dakota, and Wyoming--summary. United States Government Printing Office.
Chicago Style (17th ed.) CitationDowney, Joe S., and George A. Dinwiddie. The Regional Aquifer System Underlying the Northern Great Plains in Parts of Montana, North Dakota, South Dakota, and Wyoming--summary. Washington, D.C.: United States Government Printing Office, 1988.
MLA (9th ed.) CitationDowney, Joe S., and George A. Dinwiddie. The Regional Aquifer System Underlying the Northern Great Plains in Parts of Montana, North Dakota, South Dakota, and Wyoming--summary. United States Government Printing Office, 1988.
Warning: These citations may not always be 100% accurate.