Herda Bimantara. “EFFECT OF IGNITION TIMING CHANGES ON EXHAUST EMISSIONS IN KEN AROK URBAN CAR FUELED BY ETHANOL E100: PENGARUH PERUBAHAN IGNITION TIMING TERHADAP EMISI GAS BUANG PADA MOBIL URBAN KEN AROK BERBAHAN BAKAR ETHANOL E100”. Jurnal Teknik Mesin 3, no. 1 (May 28, 2024): 242–247. Accessed July 16, 2024. http://jurnal.polinema.ac.id/index.php/j-meeg/article/view/3947.