Bell, R. W., & Williamson, A. K. (2006). Data delivery and mapping over the web: National Water-Quality Assessment data warehouse. U.S. Dept. of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationBell, R. W., and Alex K. Williamson. Data Delivery and Mapping over the Web: National Water-Quality Assessment Data Warehouse. [Reston, Va.]: U.S. Dept. of the Interior, U.S. Geological Survey, 2006.
MLA (9th ed.) CitationBell, R. W., and Alex K. Williamson. Data Delivery and Mapping over the Web: National Water-Quality Assessment Data Warehouse. U.S. Dept. of the Interior, U.S. Geological Survey, 2006.
Warning: These citations may not always be 100% accurate.