Wongyai, Thichaya, Saman Asawapoom, Pongsak Tongpanchang, and Surasak Srikrachang. 2022. “A Participatory Action Research for Teachers’ Development towards The 21st Century Students”. Pitchayatat Journal 17 (3):29-44. https://so02.tci-thaijo.org/index.php/Pitchayatat/article/view/252468.