1. Amin, S. M. N., & Baquee, A. (Eds.) (2005). Waste management in Sylhet City corporation (pp. 47’3). Dhaka, Bangladesh: University of Development Alternative.
2. APHA-AWWA-WPCF (1989). Standard methods for the examination of water and wastewater. New York: American Public Health Association.
3. Asian Development Bank (ADB) (2006). Songhua river Basin water quality and pollution control Management. ADB, ADTA 4061-PRC.
4. Claes, M., Bagarpovse, M., Drinovec, J., Holynska, B., Kump, P., Ostachowicz, B., et al. (1997). Comparison study on river quality. Science of the Total Environment, 207, 141’48.
5. Department of Environment (DOE) (1993). Annual Report on Rivers of Bangladesh.(DOE-1993).