Cite
MLA (8th Edition)
Hamilton, Pixie A. Water-Quality Assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia--Analysis of Available Ground-Water-Quality Data through 1987. For sale by the Books and Open-File Reports Section, U.S. Geological Survey, U.S. G.P.O, 1991.
APA (7th Edition)
Hamilton, P. A. (1991). Water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia--analysis of available ground-water-quality data through 1987. For sale by the Books and Open-File Reports Section, U.S. Geological Survey, U.S. G.P.O.
Chicago (17th Edition)
Hamilton, Pixie A. Water-Quality Assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia--Analysis of Available Ground-Water-Quality Data through 1987. Denver, CO: For sale by the Books and Open-File Reports Section, U.S. Geological Survey, U.S. G.P.O, 1991.