M. F. . Saiffullah, D. D. GERIJIH, F. A. N. . Yunus, M. B. . Rahim, and K. F. . Ali, “Commercial HVAC Maintenance Instructional Video”, RITVET, vol. 2, no. 2, pp. 061–068, Oct. 2022, Accessed: Jul. 23, 2024. [Online]. Available: https://penerbit.uthm.edu.my/periodicals/index.php/ritvet/article/view/5155