Horak, W. F., & Crosby, O. A. (1985). Geohydrologic reconnaissance of the Avoca lignite deposit area near Williston, northwestern North Dakota. U.S. Geological Survey.
Chicago Style (17th ed.) CitationHorak, W. F., and Orlo A. Crosby. Geohydrologic Reconnaissance of the Avoca Lignite Deposit Area Near Williston, Northwestern North Dakota. Bismarck, North Dakota: U.S. Geological Survey, 1985.
MLA (9th ed.) CitationHorak, W. F., and Orlo A. Crosby. Geohydrologic Reconnaissance of the Avoca Lignite Deposit Area Near Williston, Northwestern North Dakota. U.S. Geological Survey, 1985.
Warning: These citations may not always be 100% accurate.