Abg Mohd Alwi, A. M. A., Abdullah, N. H. L. ., & Lai, C. S. (2021). Designing Portable Circular Cutter Tools Using Inventors for Straight Cutting Iron at Welding Workshop. Research and Innovation in Technical and Vocational Education and Training, 1(1), 61-65. https://penerbit.uthm.edu.my/periodicals/index.php/ritvet/article/view/243