Razak, N.H., H. Hashim, A.N. Yunus, F. Ghafar, and N.I. Zulkafli. “Effects of Hygroscopic Potash Lye Catalyst Concentration on the Waste Chicken Fat Methyl Ester Production”. Journal of Engineering and Technology (JET) 7, no. 2 (December 30, 2016): 103–109. Accessed May 16, 2024. https://jet.utem.edu.my/jet/article/view/1205.