Rosman, N. A. ., and M. Z. Rozali. “Evaluation of the Implementation of Vocational Gas and Arc Welding Subjects in Malaysian Secondary Schools”. Online Journal for TVET Practitioners, vol. 8, no. 2, Oct. 2023, pp. 86-94, https://publisher.uthm.edu.my/ojs/index.php/oj-tp/article/view/13923.