Ruhl, P. M. (1995). Surface-water-quality assessment of the upper Illinois River Basin in Illinois, Indiana, and Wisconsin: Analysis of relations between fish-community structure and environmental conditions in the Fox, Des Plaines, and Du Page River Basins in Illinois, 1982-84. U.S. Dept. of the Interior, U.S. Geological Survey.
Chicago Style (17th ed.) CitationRuhl, Peter M. Surface-water-quality Assessment of the Upper Illinois River Basin in Illinois, Indiana, and Wisconsin: Analysis of Relations Between Fish-community Structure and Environmental Conditions in the Fox, Des Plaines, and Du Page River Basins in Illinois, 1982-84. Urbana, IL: U.S. Dept. of the Interior, U.S. Geological Survey, 1995.
MLA (9th ed.) CitationRuhl, Peter M. Surface-water-quality Assessment of the Upper Illinois River Basin in Illinois, Indiana, and Wisconsin: Analysis of Relations Between Fish-community Structure and Environmental Conditions in the Fox, Des Plaines, and Du Page River Basins in Illinois, 1982-84. U.S. Dept. of the Interior, U.S. Geological Survey, 1995.