Glawacha , Pongpitak, and Chot Bodeerat. 2021. “Parental Opinions in Management of Child Development Center under Bandan Subdistrict Administrative Organization, Bandanlanhoi District, Sukhothai Province”. Journal of Modern Learning Development 6 (3):135-49. https://so06.tci-thaijo.org/index.php/jomld/article/view/247961.