Attaphol Pumila และผู้แต่งคนอื่นๆ. (2026) Effects of STAD Cooperative Learning Technique on Learning Achievement in Group Theory. <i>Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University</i>, <i>20</i>(1), 159-170.Attaphol Pumila และผู้แต่งคนอื่นๆ. "Effects of STAD Cooperative Learning Technique on Learning Achievement in Group Theory". Humanities and Social Sciences Journal of Pibulsongkram Rajabhat University 20 (2026):159-170.Attaphol Pumila และผู้แต่งคนอื่นๆ. Effects of STAD Cooperative Learning Technique on Learning Achievement in Group Theory. Pibulsongkram Rajabhat University:ม.ป.ท. 2026.