Japir, Abd Al-Wali, Jumat Salimon, Darfizzi Derawi, Murad Bahadi, and Muhammad Rahimi Yusop. 2016. “Purification of High Free Fatty Acid Crude Palm Oil Using Molecular Distillation”. Asian Journal of Chemistry 28 (11):2549-54. https://doi.org/10.14233/ajchem.2016.20095.