“Study on the Potential Utilization of Used Cooking Oil as an Alternative Substitute for Transformer Oil”, JEITECH, vol. 1, no. 1, hlm. 76–82, Jun 2023, Diakses: 22 Oktober 2025. [Daring]. Tersedia pada: https://jurnal.unram.ac.id/index.php/jeitech/article/view/2855