วลัญช์เสถียร ประภาศรี. “The qualitative sealants comparison of dental clinic and mobile clinic among primary school children in Nakhonsawan”. Thai Dental Public Health Journal 13, no. 3 (May 30, 2008): 106–113. accessed September 19, 2026. https://he02.tci-thaijo.org/index.php/ThDPHJo/article/view/208855.