Sawatdee, Sarapee, Wanida Homjan, and Oranut Srikham. 2026. “Factors Affecting Mathematics Achievement for Grade 9 Students Under the Surin Primary Educational Service Area Office, Area 3 : Mediation Analysis”. Journal of Graduate MCU KhonKaen Campus 13 (2):29-40. https://so02.tci-thaijo.org/index.php/jg-mcukk/article/view/282295.