Plangman, Anan, and Terdsak Namjaroen. “The Effect of a 30-Day Early Childhood Development Stimulation Program on the Knowledge and Behavior of Caregivers of Children with Suspected Delays Developmental, Kanchanaburi Province”. Journal of Vongchavalitkul university 38, no. 2 (December 28, 2025): 61–76. accessed September 10, 2026. https://ph01.tci-thaijo.org/index.php/vujournal/article/view/263075.