Pratowo, Bambang, Kunarto Kunarto, and Widi Hantoro. 2024. “Modification of Distillation Engines Using Used Oil into Diesel and Premium Fuel Using Circular Condensation”. Jurnal Indonesia Sosial Teknologi 5 (7):3598-3607. https://doi.org/10.59141/jist.v5i7.1247.