สมถวิล ส. “Factors Related to Performance Existence as Parents’ Dental Health Volunteers at Anuban Saraburi School, Saraburi Province”. Thai Dental Public Health Journal, vol. 21, no. 2, Dec. 2016, pp. 37-46, https://he02.tci-thaijo.org/index.php/ThDPHJo/article/view/149206.