APA (7th ed.) Citation

Geological Survey (U.S.). (1999). Water-quality assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia: Results of investigations, 1987-91. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

Geological Survey (U.S.). Water-quality Assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia: Results of Investigations, 1987-91. Reston, Va.: U.S. Dept. of the Interior, U.S. Geological Survey, 1999.

MLA (9th ed.) Citation

Geological Survey (U.S.). Water-quality Assessment of the Delmarva Peninsula, Delaware, Maryland, and Virginia: Results of Investigations, 1987-91. U.S. Dept. of the Interior, U.S. Geological Survey, 1999.