Cravotta, C. A., III. (2005). Effects of abandoned coal-mine drainage on streamflow and water quality in the Mahanoy Creek Basin, Schuylkill, Columbia, and Northumberland Counties, Pennsylvania, 2001. U.S. Dept. of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationCravotta, Charles A., III. Effects of Abandoned Coal-mine Drainage on Streamflow and Water Quality in the Mahanoy Creek Basin, Schuylkill, Columbia, and Northumberland Counties, Pennsylvania, 2001. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 2005.
MLA (9th ed.) CitationCravotta, Charles A., III. Effects of Abandoned Coal-mine Drainage on Streamflow and Water Quality in the Mahanoy Creek Basin, Schuylkill, Columbia, and Northumberland Counties, Pennsylvania, 2001. U.S. Dept. of the Interior, U.S. Geological Survey, 2005.