1. Sludge conditioning with Moringa seeds;Ademiluyi;Envir. Int.,1988
2. Aizawa, T., Magara, Y. and Musashi, (1990) Problems with introducing synthetic polyelectrolytes coagulants into water purification. In Coagulation, Flocculation, Sedimentation, Filtration and Flotation, International Water Supply Association (IWSA)/International Association of Water Pollution Research and Control (IAWPRC), Joint Specialised Conference, Jönköping, Water Supply, 8, 11–17
3. American Public Health Association (APHA), American Water Works Association (AWWA) and Water Pollution Control Federation (WPCF) (1992) Standard methods for the examination of water and wastewater. 18th edition, APHA Publication Office, Washington D.C
4. American Water Works Association (AWWA) (1990) Water quality and treatment: a hand book of community water supplies. McGraw Hill Publishing Company, 4th edition, New York
5. Chlorination and coagulation of humic and fulvic acids;Babcock;J. Am. Wat. Wks Ass.,1979