1. Abdul, H. M., Jawad, A., Haider, S. A., & Bahram, K. M. (2010). Application of Water Quality Index for assessment of Dokan Lake Ecosystem, Kurdistan Region, Iraq. Journal of Water Resource and Protection, 2, 792–798.
2. Ademola, F. A. (2006). Baseline concentration of heavy metals in water samples from rivers within Okitipupa southeast belt of the Nigerian bitumen field. J. Chem. Soc. Nigeria, 31, 30–37.
3. Ajima, M. N. O., Nnodi, P. C., Ogo, O., Adaku, G., Osuigwe, D. I., & Njoku, D. C. (2015). Bioaccumulation of heavy metals in the Mbaa River and the impact on the aquatic ecosystem. Environmental Monitoring and Assessment, 187(768), 1–9.
4. Akinsanola, A. A., & Ogunjobi, K. O. (2014). Analysis of rainfall and temperature variability over Nigeria. Global Journal of Human-Social Science: B Geography, Geo-Sciences, Environmental Disaster Management, 14(3) Version 1.0), 1–19.
5. Akubugwu, E. I., & Duru, M. K. C. (2001). Biochemical implication of the consumption of water from the Otamiri river, Owerri, Imo State, Nigeria. JETEAS, 2(6), 934–937.