Adan , Nor Faezah, Melvin Brian Anak Micheal, Lubna Nazihah Md Lajis, and Maizatul qibria Abd Maulud. “Portable Heating Lunch Box ”. Multidisciplinary Applied Research and Innovation 4, no. 3 (May 8, 2023): 275–280. Accessed July 18, 2024. https://penerbit.uthm.edu.my/periodicals/index.php/mari/article/view/8822.