Cite
MLA (8th Edition)
Potentiometric Surface of the Aquia Aquifer In Southern Maryland, September 1989. Department of the Interior, U.S. Geological Survey, 1991.
APA (7th Edition)
Potentiometric surface of the Aquia aquifer in southern Maryland, September 1989. (1991). Department of the Interior, U.S. Geological Survey.
Chicago (17th Edition)
“Potentiometric Surface of the Aquia Aquifer in Southern Maryland, September 1989.” Towson, Maryland: Department of the Interior, U.S. Geological Survey, 1991.