Hoaha, P., Boonjang, S., Chomkaew, K., Kuekli, W., Phetphum, C. and Yangthisan, N. (2019) “Effects of secondhand smoke reduction programin the household, Ban Tio Sub-district, Lom SakDistrict, Phetchabun Province”, Journal of Public Health and Health Sciences Research, 1(1), pp. 39–52. available at: https://he01.tci-thaijo.org/index.php/JPHSR/article/view/212718 (accessed: 11 October 2026).