Suktanarak, S., B. Aschariyaphotha, and W. Aschariyaphotha. “Product Development of Bitter Orange (Citrus Aurantium L.) Gel Bead”. Rajamangala University of Technology Tawan-Ok Research Journal, vol. 16, no. 2, Dec. 2023, pp. 66-74, https://li01.tci-thaijo.org/index.php/researchjournal2rmutto/article/view/260323.