Thanomvaraporn, Suchart. “The Study of Using Preservatives and Synthetic Colors in Thai Pancake Burritos In Phra Nakorn Si Ayutthaya”. Thai Food and Drug Journal 26, no. 2 (July 5, 2019): 76–92. Accessed May 2, 2024. https://he01.tci-thaijo.org/index.php/fdajournal/article/view/201430.