ทองอ่อน อ. . “The Results of Learning Management in Economics Course Using to the Cooperative Learning With the STAD Technique on Learning Achievement of Mathayomsuksa Two Students”. Education Journal Faculty of Education, Nakhon Sawan Rajabhat University, vol. 4, no. 1, Apr. 2021, pp. 90-99, https://so02.tci-thaijo.org/index.php/edunsrujo/article/view/253821.