Ramadhan, A. A., T. A. Hussian, and K. B. Nada. “Using Statistical Analysis Approach to Evaluate the Groundwater Quality in Jisser Diyala Area”. Al-Nahrain Journal of Science, Vol. 20, no. 1, Mar. 2017, pp. 7-16, https://anjs.edu.iq/index.php/anjs/article/view/35.