Boonurai, S. ., P. . Ruangtip, and S. . Juntapremjit. “A DEVELOPMENT INDICATORS FOR EDUCATIONAL INEQUALITY IN PRESCHOOL”. Journal of Yanasangvorn Research Institute Mahamakut Buddhist University, vol. 12, no. 2, Dec. 2021, pp. 81-94, https://so04.tci-thaijo.org/index.php/yri/article/view/256533.