Houda Ghailane, Mohamad Asmidzam Ahamat, and Ahmad Naim Ahmad Yahaya. “Properties of Clay As a Construction Material for Building Walls”. International Journal of Advanced Science and Technology, Vol. 29, no. 8s, June 2020, pp. 4658-64, http://sersc.org/journals/index.php/IJAST/article/view/25534.