APA (7th ed.) Citation

National Water-Quality Assessment Program (U.S.), Geological Survey (U.S.), & Barbash, J. E. (1999). Distribution of major herbicides in ground water of the United States. U.S. Dept. of the Interior, U.S. Geological Survey.

Chicago Style (17th ed.) Citation

National Water-Quality Assessment Program (U.S.), Geological Survey (U.S.), and Jack E. Barbash. Distribution of Major Herbicides in Ground Water of the United States. Scramento, Calif.: U.S. Dept. of the Interior, U.S. Geological Survey, 1999.

MLA (9th ed.) Citation

National Water-Quality Assessment Program (U.S.), et al. Distribution of Major Herbicides in Ground Water of the United States. U.S. Dept. of the Interior, U.S. Geological Survey, 1999.