Fadhlan Abdul Hadi, and Wan Yuswadi bin Wan Yaacob. “Kajian Keberkesanan Smart Shovel”. Journal of STEM and Education 1, no. 1 (March 18, 2022): 38–48. Accessed November 25, 2024. http://mmbrf.com/ojs/index.php/pkb/article/view/9.