Park, Kyunghee, and Yonghwan Bang. “Motivational Determinants and Achievements on Digital Learning Tool Proficiency Among University Adult Learners”. International Journal of Learning, Teaching and Educational Research 24, no. 8 (August 30, 2025): 755–771. Accessed June 25, 2026. https://ijlter.myres.net/index.php/ijlter/article/view/2464.