Asman, Nur Ariff, and Wan Hanim Nadrah Wan Muda. “Development of Arc Welding Teaching Aid for Padding Training”. Research and Innovation in Technical and Vocational Education and Training, vol. 1, no. 1, Mar. 2021, pp. 123-32, https://publisher.uthm.edu.my/periodicals/index.php/ritvet/article/view/195.