Al-Safadi, R., R. Al-Safadi, N. Al-Lowaim, F. Al-Alwi, D. Al-Yahya, B. Al-Shallaa, G. Al-Ghanim, D. Al-Ismail, and F. Al-Haddad. “Amalgam and Composite Use Among Dental Students in Saudi Arabia”. International Journal of Emerging Trends in Science and Technology, Vol. 6, no. 08, Aug. 2019, pp. 6830-6, http://igmpublication.org/ijetst.in/index.php/ijetst/article/view/1443.