Berman ET, Hamidah I, Mulyanti B, Setiawan A. Low Cost and Portable Laboratory Kit for Practicum Learning of Air Conditioning Process in Vocational Education. jtet. 2021;13(3):133-145. Accessed July 18, 2024. https://publisher.uthm.edu.my/ojs/index.php/JTET/article/view/9091