Bunwirat, N., and S. Boonsathorn. “Inquiry-Based Learning: an Effective Pedagogical Approach for Empowering 21st Century Learners and Education 4.0 in Thailand”. Political Science and Public Administration Journal, vol. 9, no. 1, June 2018, pp. 163-8, https://so05.tci-thaijo.org/index.php/polscicmujournal/article/view/116920.