Nandiyanto, Asep Bayu Dani, et al. “Experimental Demonstration for Enhancing Vocational Students’ Comprehension on Heat Transfer through Conduction and Radiation of Light Bulb ”. Journal of Technical Education and Training, vol. 12, no. 3, Sept. 2020, pp. 189-95, https://publisher.uthm.edu.my/ojs/index.php/JTET/article/view/6554.