Sangwalee, W., M. Photipim, S. Bunyapakorn, J. Bunyapakorn, W. Sungwalee, S. Suwannatrai, and S. Inthachack. “Occupational Health Risk among Informal Workers in Nakhon Ratchasima Province”. Journal of Vongchavalitkul university, vol. 39, no. 1, June 2026, pp. 109-24, https://ph01.tci-thaijo.org/index.php/vujournal/article/view/266887.