Kruetiwa, Dawata, Pattarawadee tansuwan, Charoen Kruetiwa, Watcharin Keethong, Chanita Kraipetch, and Kawee Poopipat. 2013. “Implemetation Recreational Activities to Echance Early Childhood Development at the Responsibility Area of the Institute of Physical Education-Angthong”. Academic Journal of Thailand National Sports University 5 (3). Chonburi, Thailand:17-30. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/254988.