Simmons, D. L. (1986). Geohydrology and ground-water quality on Shelter Island, Suffolk County, New York, 1983-84. U.S. Geological Survey.
Chicago Style (17th ed.) CitationSimmons, Dale L. Geohydrology and Ground-water Quality on Shelter Island, Suffolk County, New York, 1983-84. Syosset, New York: U.S. Geological Survey, 1986.
MLA (9th ed.) CitationSimmons, Dale L. Geohydrology and Ground-water Quality on Shelter Island, Suffolk County, New York, 1983-84. U.S. Geological Survey, 1986.
Warning: These citations may not always be 100% accurate.