1. BROWN, R.M., McCLELLAND, N.I., DEININGER, R.A., and TOZER, R.G. “A Water Quality Index - Do We Dare?” Water and Sewage Works (Oct. 1970) and presented at National Symposium on Data and Instrumentation for Water Quality Management, July 1970.
2. O'CONNOR, M.F. The Application of Multi-Attribute Scaling Procedures to the Development of Indices of Water Quality. Ph.D. dissertation/University of Michigan, 1971.