Tawi, Kamarul Baharin, Rohaizad Yunus, and Mohamad Husni Talib @ Charlie. “VALVE TRAIN INVESTIGATION FOR CNG ENGINE APPLICATION”. Jurnal Mekanikal 15, no. 2 (May 2, 2018). Accessed May 17, 2024. https://jurnalmekanikal.utm.my/index.php/jurnalmekanikal/article/view/230.