Tengku Norbaya Tengku Azhar ,Siti Noorfahana Mohd Idris, Radiah Abd. Ghani,Muhammad Rahimi Che Hassan, Malissa Mohamed, Norhafizah Mohd Zazi, Umi Shakina Haridan, Noor Akmal Abd Wahab. “Socio-Demographic Factors of Allergy Awareness Among Pre-University Student In Selangor”. International Journal of Advanced Science and Technology, Vol. 29, no. 9s, May 2020, pp. 1842 -50, http://sersc.org/journals/index.php/IJAST/article/view/13954.