จิรจตุพรกุล ภาคิม, โกศัลย์พิพัฒน์ ศิริมาศ, and ศรีสุรักษ์ ชไมมน. “Guidelines for Education Development in Early Childhood Level of Child Development Center Attach to Chiang Dao Sub-District Administration Organization to the Standards of the National Child Care Center”. Ganesha Journal 14, no. 2 (December 26, 2018): 17–29. accessed August 28, 2026. https://so01.tci-thaijo.org/index.php/pikanasan/article/view/162914.