Chuenpalat A, Promsiripaiboon Y, Kaewpan W. “The Effects of Dental Health Education Program by Applying the Protection Motivation Theory and Social Support on Behavioral Modification for Dental Caries Prevention Among Village Health Volunteers”. Journal of The Department of Medical Services, vol. 42, no. 4, Aug. 2017, pp. 99-108, https://he02.tci-thaijo.org/index.php/JDMS/article/view/248846.