Ackerman, D. J. (1989). Potentiometric surfaces of the Mississippi River Valley alluvial aquifer in eastern Arkansas, Spring 1972 and 1980. Department of the Interior, United States Geological Survey.
Chicago Style (17th ed.) CitationAckerman, D. J. Potentiometric Surfaces of the Mississippi River Valley Alluvial Aquifer in Eastern Arkansas, Spring 1972 and 1980. Little Rock, Arkansas: Department of the Interior, United States Geological Survey, 1989.
MLA (9th ed.) CitationAckerman, D. J. Potentiometric Surfaces of the Mississippi River Valley Alluvial Aquifer in Eastern Arkansas, Spring 1972 and 1980. Department of the Interior, United States Geological Survey, 1989.
Warning: These citations may not always be 100% accurate.