Geological Survey (U.S.), Pettijohn, R. A., & Chen, H. (1983). Geohydrology of the High Plains aquifer system in Nebraska. Department of the Interior, United States Geological Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Robert A. Pettijohn, and Hsiu-Hsiung Chen. Geohydrology of the High Plains Aquifer System in Nebraska. [Lincoln, Neb.]: Department of the Interior, United States Geological Survey, 1983.
MLA (9th ed.) CitationGeological Survey (U.S.), et al. Geohydrology of the High Plains Aquifer System in Nebraska. Department of the Interior, United States Geological Survey, 1983.
Warning: These citations may not always be 100% accurate.