Pramiyawongsa S, Thacha W. Join Forces to Improve the 21st Century Teaching Skills: A Case of Samlium Municipal School. dhammathas [internet]. 2021 Sep. 30 [cited 2026 Sep. 18];21(3):199-212. available from: https://so06.tci-thaijo.org/index.php/dhammathas/article/view/249987