Lunawan, Watsachon, Buavaroon Srichaikul, and Jatuporn Luangubol. 2020. “The effects of self-regulation theory based oral health care program on oral health behavior in elderly in Wang Yang subdistrict, Wang Yang district, Nakhon Phanom province”. UBRU Journal for Public Health Research 9 (2):80-89. https://he02.tci-thaijo.org/index.php/ubruphjou/article/view/241781.