N.H. Said, F.N. Ani, and M.F.M. Said. “REVIEW OF THE PRODUCTION OF BIODIESEL FROM WASTE COOKING OIL USING SOLID CATALYSTS”. Journal of Mechanical Engineering and Sciences 8 (June 30, 2015): 1302–1311. Accessed July 22, 2024. https://journal.ump.edu.my/jmes/article/view/8327.