Mohd Fauzi, Noor Akhmazillah, and Mohamad Roji Sarmidi. “Extraction of Heat Treated Palm Oil and Their Stability on β-Carotene During Storage”. Journal of Science and Technology, vol. 2, no. 1, Sept. 2011, https://penerbit.uthm.edu.my/ojs/index.php/JST/article/view/234.