Janejatupat Y, Satjaharuthai K, Makmee P. Management Guidelines for Private Early Childhood Learning Centers towards at the Standards of The Ministry of Social Development and Human Security. rpujournal [Internet]. 2022 Dec. 25 [cited 2024 May 7];8(3):447-62. Available from: https://so03.tci-thaijo.org/index.php/rpu/article/view/265331