APA (7th ed.) Citation

Helsig, P. M. (2010). Water resources of Rockland County, New York, 2005-07, with emphasis on the Newark Basin bedrock aquifer. U.S. Department of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Helsig, Paul M. Water Resources of Rockland County, New York, 2005-07, with Emphasis on the Newark Basin Bedrock Aquifer. Reston,Virginia: U.S. Department of the Interior, U.S. Geological Survey, 2010.

MLA (9th ed.) Citation

Helsig, Paul M. Water Resources of Rockland County, New York, 2005-07, with Emphasis on the Newark Basin Bedrock Aquifer. U.S. Department of the Interior, U.S. Geological Survey, 2010.