Hatakee, A. ., and J. . Sudrung. “World-Class Standard School Curriculum in 21st Century”. Journal of Education Studies, vol. 49, no. 1, Mar. 2021, p. EDUCU4901009 (12 pages) doi: 10.14456/educu.2021.9, https://so02.tci-thaijo.org/index.php/EDUCU/article/view/247845.