Sodsee, Anuphong, Nalinee Na Nakorn, and Sungworn Ngudgratoke. 2020. “The Development of the Oral Health Literacy Test in Grade 4-6 Students”. KKU Research Journal (Graduate Studies) Humanities and Social Sciences 8 (1):52-64. https://so04.tci-thaijo.org/index.php/gskkuhs/article/view/241435.