Promduangsri, Methawee, and Samorn Taweebun. “Development of Learning Achievement in Spelling and Meaning Thai Language Learning Groups Through Cooperative Learning Employing the STAD Technique and Skill Training Sets for 4th Grade Students”. Journal for Developing the Social and Community 13, no. 2 (June 6, 2026): 231–248. accessed October 13, 2026. https://so03.tci-thaijo.org/index.php/rdirmu/article/view/301648.