Andrian, Andrian, Ganefri Ganefri, and Sukardi Sukardi. “Validity Trainer Tool As Learning Media for Electric Power Distribution System”. Jurnal Pendidikan Teknologi Kejuruan 3, no. 3 (August 31, 2020): 139-146. Accessed May 6, 2024. http://jptk.ppj.unp.ac.id/index.php/jptk/article/view/130.