1. Standard Methods for the Examination of Water and Wastewater;APHA,1992
2. Standard Methods for the Examination of Dairy Products;APHA,1985
3. Microbial Ecology: Fundamentals and Applications;Atlas,1987
4. Biological Process Design for Wastewater Treatment;Benefield,1985
5. Food-processing wastes;Borup;Research Journal of the WPCF,1991