Sukkhown, P., P. Nitayanont, and A. Boonpan. “Development of Healthy Biscuits from Purple Sweet Potato Containing High Resistant Starch”. Journal of Food Technology, Siam University, vol. 18, no. 1, June 2023, pp. 21-38, https://li01.tci-thaijo.org/index.php/JFTSU/article/view/257328.