คำวัตร ศรีทวน. “Follow-up of the Application of Knowledge to Teachers through the Workshop Of the Environmental Education Center”. Academic Journal Phranakhon Rajabhat University 11, no. 2 (October 22, 2020). Accessed May 2, 2024. https://so01.tci-thaijo.org/index.php/AJPU/article/view/183239.