Suebsing, Saksri, Nitinard Udomsun, and Supimol Boonpok. 2023. “Development of Teaching Skills of Early Childhood Teachers under the Office of Private Education With the EF GUIDELINE Tool in Roi Et and Yasothon Province”. Journal of Humanities and Social Sciences, Rajapruk University 9 (1):327-40. https://so03.tci-thaijo.org/index.php/rpu/article/view/267860.