สุวรรณนพรัตน์ นภา. “Situation of Dental Caries and Periodontal Disease of people who get services in Kongkrailas hospital, Sukhothai province”. Community and Social Development Journal 20, no. 1 (June 11, 2019): 105–114. accessed December 6, 2025. https://so05.tci-thaijo.org/index.php/cmruresearch/article/view/163643.