Cite
MLA (8th Edition)
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.
APA (7th Edition)
Potentiometric surfaces of the Mississippi River Valley alluvial aquifer in eastern Arkansas, Spring 1972 and 1980. (1989). Department of the Interior, United States Geological Survey.
Chicago (17th Edition)
“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.