1. American Public Health Association, 1976. Standard methods for the examination of water and wastewater. 14th ed., Washington, D.C. 1193 pp.
2. Bachmann, R. W. & Jones, J. R., 1974. Phosphorus inputs and algal blooms in lakes. Iowa St. J. Res. 48: 155–160.
3. Brezonik, P. L., 1978. Effect of organic color and turbidity on Secchi disc transparency. J. Fish. Res. Bd Can. 35: 1410–1416.
4. Canfield, D. E. Jr., 1981. Chemical and trophic state characteristics of Florida lakes in relation to regional geology. Final Report. Submitted to Florida Cooperative Fish and Wildlife Unit. Univ. of Florida, Gainesville, Florida. 444 pp.
5. Canfield, D. E., Jr. & Bachmann, R. W., 1981. Prediction of total phosphorus concentrations, chlorophyll a, and Secchi depths in natural and artifical lakes. Can. J. Fish. aquat. Sci. 38: 414–423.