Pornbandid P. Perception and Attitude Towards Self-Directed Learning of Undergraduate Students, Maha Sarakham Rajabhat University. J_SSD [internet]. 2024 Jun. 30 [cited 2025 Jun. 17];2(3):1-20. available from: https://so16.tci-thaijo.org/index.php/J_SSD/article/view/564