Gunawan, Y. ., Hasanuddin, L. ., Sisworo, R. R. ., Lolok, A. ., Bunyamin, Endriatno, N. ., & Putra, M. A. . (2020). Percentage Analysis Mixed of CPO, Phosphic Acid and Sodium Hydroxide as a Replacement for Diesel Engine Oil Fuel Using a Calorize Test. International Journal of Engineering and Computer Science, 9(09), 25189–25198. https://doi.org/10.18535/ijecs/v9i09.4529