Nurfarahin Zafir, Mazida Ahmad, and Norliza Katuk. “Mangkuk Tingkat System”. Multidisciplinary Applied Research and Innovation 2, no. 3 (December 8, 2021): 030–035. Accessed May 6, 2024. https://publisher.uthm.edu.my/periodicals/index.php/mari/article/view/5082.