Walters, D. J. (1992). Louisiana ground-water map no. 5: Potentiometric surface, 1990, and water-level changes, 1974-90, of the Evangeline Equivalent/southeast Louisiana Aquifer System. U.S. Department of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationWalters, David J. Louisiana Ground-water Map No. 5: Potentiometric Surface, 1990, and Water-level Changes, 1974-90, of the Evangeline Equivalent/southeast Louisiana Aquifer System. Washington, D.C.: U.S. Department of the Interior, U.S. Geological Survey, 1992.
MLA (9th ed.) CitationWalters, David J. Louisiana Ground-water Map No. 5: Potentiometric Surface, 1990, and Water-level Changes, 1974-90, of the Evangeline Equivalent/southeast Louisiana Aquifer System. U.S. Department of the Interior, U.S. Geological Survey, 1992.