Samosorn, Nopparat, Natthamanee Wongkawin, Chartchai Yuenyongpanich, and Morakot Samaphant. 2020. “The effectiveness of a smoking prevention behavior promoting program of junior high school students, Landokmai Sub-district, Kamphaeng Phet Province”. Journal of Public Health and Health Sciences Research 2 (1):41-51. https://he01.tci-thaijo.org/index.php/JPHSR/article/view/240319.