1. Abdullah, M. H., & Musta, B. (1999). Phreatic Water quality of the Turtle Island of West Malaysia: Pulau Selingan and Pulau Bakungann Kechil. Borneo Science, 6, 1–9.
2. Alper, B., Abidin, K., & Yuksel, K. B. (1998). The effect of Yatagan thermal power plant (Mugla, Turkey) on the quality of surface and ground waters. Water & Soil Pollution, 149, 93–111.
3. Bacaj, M., & Branica, M. (1983). The determination of lead concentrations in the water of the rivers Sitnica and Ibar, using Anodic Stripping Voltammetry (in Croatian), The Bulletine of the Chemist and Technologists of Kosova, Prishtina, 3/1, 27–32.
4. Berisha, L., Arbneshi, T., & Rugova, M. (2008). The level concentration of lead, cadmium, copper, zinc and phenols in the water river of Sitnica. BALWOIS 2008 Conference papers, Ohrid, Republic of Macedonia, 27–31 May 2008.
5. Bhandari, N. S., & Nayal, K. (2008). Correlation study on physico-chemical parameters and quality assessment of Kosi River water, Uttarakhand. E-Journal of Chemistry, 5(2), 342–346.