Butt, A., M. S. Baig, D. Shangguan, W. Ahmad, S. Khalid, S. A. Gillani, G. Yaseen, and S. A. Khan. “Evaluation of the Physical and Chemical Properties of Drinking Water in Higher Educational Institutions in Islamabad”. Technical Journal, Vol. 3, no. ICACEE, May 2024, pp. 835-49, https://tj.uettaxila.edu.pk/index.php/technical-journal/article/view/1972.