Ali, M. I., S. Abdullah, T. I Mohamad, and W. R. W. Daud. 2015. “Preparation and Characterization Of Untreated Waste Palm Oil/Diesel Fuel Blend”. Journal of Mechanical Engineering and Technology (JMET) 3 (2):1-12. https://jmet.utem.edu.my/jmet/article/view/368.