Hayeeyoosoh, Bismee, Saluma Samanman, Amin Fatoni, Sitimaryam Salaehsa, Aslan Hilae, Irfan Masaesai, and Anusa Suwanwong. “Purple Sweet Potato Extract Immobilization in Natural Rubber Films: A Potential Application for the Detection of Fe(III)”. Journal of Science, Agriculture and Technology 1, no. 2 (October 4, 2023): 86–100. accessed May 9, 2025. https://li04.tci-thaijo.org/index.php/psj/article/view/1150.