Patrakitkomjorn, S., D. Changtrakun, and S. Khaichaiyaphum. “Natural Drinks With Artificial Food Colors in Campus”. Archives of Allied Health Sciences, vol. 22, no. 3, Dec. 2010, pp. 308-9, https://he01.tci-thaijo.org/index.php/ams/article/view/66196.