Upper Midwest Environmental Sciences Center (Geological Survey) & Barko, V. A. (2005). Spatial, temporal, and environmental trends of fish assemblages within six reaches of the Upper Mississippi River System. Upper Midwest Environmental Sciences Center, U.S. Geological Survey.
Chicago Style (17th ed.) CitationUpper Midwest Environmental Sciences Center (Geological Survey) and Valerie A. Barko. Spatial, Temporal, and Environmental Trends of Fish Assemblages Within Six Reaches of the Upper Mississippi River System. La Crosse, Wis.: Upper Midwest Environmental Sciences Center, U.S. Geological Survey, 2005.
MLA (9th ed.) CitationUpper Midwest Environmental Sciences Center (Geological Survey) and Valerie A. Barko. Spatial, Temporal, and Environmental Trends of Fish Assemblages Within Six Reaches of the Upper Mississippi River System. Upper Midwest Environmental Sciences Center, U.S. Geological Survey, 2005.