APA aipamena

Geological Survey (U.S.) & Fischer, J. M. (2004). Water quality in the Delaware River Basin, Pennsylvania, New Jersey, New York, and Delaware, 1998-2001. U.S. Dept. of the Interior, U.S. Geological Survey For sale by U.S. Geological Survey, Information Services.

Chicago Style aipamena

Geological Survey (U.S.) and Jeffrey M. Fischer. Water Quality in the Delaware River Basin, Pennsylvania, New Jersey, New York, and Delaware, 1998-2001. Reston, Va., Denver, CO: U.S. Dept. of the Interior, U.S. Geological Survey For sale by U.S. Geological Survey, Information Services, 2004.

MLA aipamena

Geological Survey (U.S.) and Jeffrey M. Fischer. Water Quality in the Delaware River Basin, Pennsylvania, New Jersey, New York, and Delaware, 1998-2001. U.S. Dept. of the Interior, U.S. Geological Survey For sale by U.S. Geological Survey, Information Services, 2004.