Hirsch, R. M., Alley, W. M., & Wilber, W. G. (1988). Concepts for a National Water-Quality Assessment Program. U.S. Department of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationHirsch, Robert M., William M. Alley, and William G. Wilber. Concepts for a National Water-Quality Assessment Program. [Reston, Virginia]: U.S. Department of the Interior, U.S. Geological Survey, 1988.
MLA (9th ed.) CitationHirsch, Robert M., et al. Concepts for a National Water-Quality Assessment Program. U.S. Department of the Interior, U.S. Geological Survey, 1988.
Warning: These citations may not always be 100% accurate.