Yunus, Faizal Amin Nur, and Noor Farahanis Zaima Othman. 2025. “Functionality of an Air Duct Model As a Teaching Aid”. Research and Innovation in Technical and Vocational Education and Training 5 (2): 137-45. https://publisher.uthm.edu.my/periodicals/index.php/ritvet/article/view/15991.