อุทธา ธ, อักษรวงศ์ ร. Factors Affecting Stress in Taking the Ordinary National Educational Test of Mathayom Suksa 3 Students of the Schools under the Jurisdiction of Secondary Educational Service Area Office 29. ubonreseva [internet]. 2021 Aug. 29 [cited 2026 Oct. 4];5(2):19-28. available from: https://so06.tci-thaijo.org/index.php/ubonreseva/article/view/251009