1. APHA, AWWA, WPCF, 1998. Standard Methods for the Examination of Water and Wastewater. American Public Health Association, Washington, D.C.
2. ASTM, 1992. Standard Guide for Collection, Storage, Characterization, and Manipulation of Sediments for Toxicolo-gical Testing. American Society for Testing and Materials, Philadelphia, PA.
3. Lindsay, W.L. 1979. Chemical equilibria in soils. Wiley-Inter-science, New York.
4. Schoumans, O.F. 2000. Determination of the Degree of Phosphate Saturation In Non-Calcareous Soils. In Pierzynski, G.M. (Ed), Methods of Phosphorus Analysis for Soils, Sediments, Residuals, and Waters. Publishing House of North Carolina State University, North Carolina, pp. 32–34.
5. USEPA, 1979. Methods for the chemical analysis of water and wastes. EPA-600/4-79-020. United States Environmental Protection Agency, Washington, D.C.