Anderson, R. M. (2001). Water quality in the Allegheny and Monogahela River Basins, Pennsylvania, West Virginia, New York, and Maryland, 1996 - 98. US Geological Survey circular 1202.
Chicago Style CitationAnderson, Robert M. "Water Quality in the Allegheny and Monogahela River Basins, Pennsylvania, West Virginia, New York, and Maryland, 1996 - 98." US Geological Survey Circular 1202 2001.
MLA引文Anderson, Robert M. "Water Quality in the Allegheny and Monogahela River Basins, Pennsylvania, West Virginia, New York, and Maryland, 1996 - 98." US Geological Survey Circular 1202 2001.
警告：這些引文格式不一定是100％准確.