Donlao, T., S. Fuangchan, P. Chirinang, and V. Kromadit. “The Development of Thai Labor in Industry Sector to Drive the Thailand 4.0”. Journal of Humanities and Social Sciences, Rajapruk University, vol. 7, no. 3, Dec. 2021, pp. 56-71, https://so03.tci-thaijo.org/index.php/rpu/article/view/257341.