Poonperm, W., and P. Banchonhattakit. “Applying Stages of Change and Health Literacy on Weight Control and Obesity Prevention among Village Health Volunteers in Kumphawapi District, Udon Thani Province”. Thai Journal of Health Education, vol. 40, no. 2, July 2018, pp. 103-15, https://he01.tci-thaijo.org/index.php/muhed/article/view/136307.