Buja, A., T. C. Ong, and R. J. Ho. “Torch for Bead Forming Process”. Politeknik & Kolej Komuniti Journal of Engineering and Technology, vol. 4, no. Special Issue, Jan. 2019, pp. 138-45, https://app.mypolycc.edu.my/journal/index.php/PMJET/article/view/634.