Eckhardt, D. A., & Sloto, R. A. (2012). Baseline groundwater quality in national park units within the Marcellus and Utica Shale gas plays, New York, Pennsylvania, and West Virginia, 2011. U.S. Dept. of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationEckhardt, David A., and Ronald A. Sloto. Baseline Groundwater Quality in National Park Units Within the Marcellus and Utica Shale Gas Plays, New York, Pennsylvania, and West Virginia, 2011. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 2012.
MLA (9th ed.) CitationEckhardt, David A., and Ronald A. Sloto. Baseline Groundwater Quality in National Park Units Within the Marcellus and Utica Shale Gas Plays, New York, Pennsylvania, and West Virginia, 2011. U.S. Dept. of the Interior, U.S. Geological Survey, 2012.