Preechawong, S., N. Wongsaita, H. Taweepatana, and S. Kaewkham. “A Review of Studies Related to Smoking in High Schools”. Thai Journal of Health Education, vol. 37, no. 3, Feb. 2019, pp. 15-28, https://he01.tci-thaijo.org/index.php/muhed/article/view/174658.