1. American Public Health Association , 1975 . Standard Methods for the Analysis of Water and Wasterwater, 14th Edition . Washington, D.C., 1193 pp.
2. T. V. Belanger, S. D. Vonderen, and T. J. Carberry , 1983 . Analysis of Selected Water Quality Factors in the Upper St. Johns River Basin. Report to the St. Johns River Water Management District, Department of Environmental Science and Engineering, Florida Institute of Technology, Melbourne, Florida.
3. CH2M Hill, Inc. , 1979 . Assessment of Water Quality. Report for Descret Ranches of Florida, Inc., Gainesville, Florida.
4. D. T. Cox, E. D. Vosatka, H. L. Moody, and L. Hartzog , 1976 . D-J. F-25 Stream Investigation Completion Report: Upper St. Johns River Study. Florida Game and Fresh Water Fish Commission, Tallahassee, Florida, 859 pp.
5. The phosphorus-chlorophyll relationship in lakes1,2