Kim, Youngmi, Shinyu Oh, and Tae-Young Kim. “Longitudinal Effect of Learning Environment, Learner Motivation, and Self-Regulation Strategies on EFL students’ L2 Achievement”. Porta Linguarum. An International Journal of Foreign Language Teaching and Learning, no. 45 (January 30, 2026): 191–214. Accessed July 20, 2026. https://revistaseug.ugr.es/index.php/portalin/article/view/30620.