Punakorn I- on, Sriputtarin S. Current Situations, Desirable Situations and Guideline for Developing Child Center Learning Process of Teacher in School Under The Secondary Educational Service Area Office 22 in Naknon Phanom Province. RJPJ [Internet]. 2021 Feb. 20 [cited 2024 May 2];15(38):179-94. Available from: https://so05.tci-thaijo.org/index.php/RJPJ/article/view/248252