Water-quality conditions during low flow in the lower Youghiogheny River basin, Pennsylvania, October 5-7, 1998
MLA
Sams, James I. Water-quality Conditions During Low Flow In the Lower Youghiogheny River Basin, Pennsylvania, October 5-7, 1998. New Cumberland, Pa.: U.S. Dept. of the Interior, U.S. Geological Survey , 2001
APA, 7th edition
Sams, J. I. (2001). Water-quality conditions during low flow in the lower Youghiogheny River basin, Pennsylvania, October 5-7, 1998. New Cumberland, Pa.: U.S. Dept. of the Interior, U.S. Geological Survey
Chicago, 17th edition
Sams, James I. Water-quality conditions during low flow in the lower Youghiogheny River basin, Pennsylvania, October 5-7, 1998. New Cumberland, Pa.: U.S. Dept. of the Interior, U.S. Geological Survey , 2001