ตาชม คมกฤช, and ยืนศักดิ์ สนิท. “Attitude and actual practices of classroom action research of English teachers”. Trends of Humanities and Social Sciences Research 6, no. 1 (June 21, 2019): 21–41. accessed September 4, 2026. https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/196619.