Meepun, Nipaporn, and Pongsak Noparat. “Analysis of Beta-Carotene, Tocopherol and Fatty Acid in Red Palm Oil for Development as Soap Products”. Burapha Science Journal 29, no. 3 September-December (November 5, 2024): 1047–1063. accessed April 4, 2025. https://li05.tci-thaijo.org/index.php/buuscij/article/view/369.