Sukmara, Sony. “ANALISIS KARAKTERISTIK RING PISTON ORIGINAL DAN RING PISTON LOKAL PADA MOBIL DAIHATSU S-38”. Jurnal Konversi Energi dan Manufaktur 2, no. 1 (April 30, 2015): 29 - 35. Accessed May 10, 2024. https://journal.unj.ac.id/unj/index.php/jkem/article/view/6301.