APA (7th ed.) Citation

Westerfield, P. W. (1990). Water-level maps of the Mississippi River Valley alluvial aquifer in eastern Arkansas, 1987. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Westerfield, Paul W. Water-level Maps of the Mississippi River Valley Alluvial Aquifer in Eastern Arkansas, 1987. [Little Rock, Ark.]: U.S. Department of the Interior, U.S. Geological Survey, 1990.

MLA (9th ed.) Citation

Westerfield, Paul W. Water-level Maps of the Mississippi River Valley Alluvial Aquifer in Eastern Arkansas, 1987. U.S. Department of the Interior, U.S. Geological Survey, 1990.