Waleng, Moohammad. “Preparation of Youths for Thailand 4.0”. Princess of Naradhiwas University Journal of Humanities and Social Sciences 8, no. 1 (October 28, 2020): 275-287. Accessed May 14, 2021. https://so05.tci-thaijo.org/index.php/pnuhuso/article/view/243716.