1. Association of Official Agricultural Chemists, 1950. Official Methods of Analysis, 7th Ed. Assoc. Off. Agric. Chem., Washington, D.C. p. 13, no. 2.24.
2. Association of Official Agricultural Chemists, 1970. Official Methods of Analysis, 11th Ed. Assoc. Off. Agric. Chem., Washington, D.C. p. 123 and 392.
3. Standard Methods for the Examination of Water and Wastewater;American Public Health Association,1971
4. Reduction of suspended solids in vegetable canning waste effluents by coagulation with chitosan;Bough;J. Food Sci.,1975
5. Treatment of concentrated pimiento wastes with polymeric flocculating agents;Bough;J. Milk FoodTechnol.,1973