Cite
MLA (8th Edition)
Altitude and Configuration of the Potentiometric Surfaces of the Upper and Lower Aquifer Systems In Bridgeton, Nockamixon, and Tinicum Townships, Bucks County, Pennsylvania, April 1991 through April 1992. U.S. Department of the Interior, U.S. Geological Survey, 1993.
APA (7th Edition)
Altitude and configuration of the potentiometric surfaces of the upper and lower aquifer systems in Bridgeton, Nockamixon, and Tinicum townships, Bucks County, Pennsylvania, April 1991 through April 1992. (1993). U.S. Department of the Interior, U.S. Geological Survey.
Chicago (17th Edition)
“Altitude and Configuration of the Potentiometric Surfaces of the Upper and Lower Aquifer Systems in Bridgeton, Nockamixon, and Tinicum Townships, Bucks County, Pennsylvania, April 1991 through April 1992.” Lemoyne, Pennsylvania: U.S. Department of the Interior, U.S. Geological Survey, 1993.