Kaliappan, Anusuya, and Hashima Hamid. “Green Technology and Vocational College: A Preliminary Study”. Online Journal for TVET Practitioners 7, no. 1 (March 30, 2022): 49–60. Accessed March 11, 2026. https://penerbit.uthm.edu.my/ojs/index.php/oj-tp/article/view/10471.