Pongpituk, Pongkanit. “Factors Influencing the Effectiveness in Ordinary National Education Test of Grade 9 Student in Kanchanaburi Province”. Dhammathas Academic Journal 18, no. 2 (August 8, 2018): 1–10. accessed October 10, 2026. https://so06.tci-thaijo.org/index.php/dhammathas/article/view/109137.