Najamuddin, Najamuddin, and Muhammad Nur Akbar Rasyid. 2026. “STUDENTS’ SELF-ASSESSMENT EXPERIENCE USING DUOLINGO SPEAK: A CASE STUDY IN SPEAKING CLASS”. Indonesian Journal of Social Science and Education (IJOSSE) 2 (3):1449-58. https://doi.org/10.62567/ijosse.v2i3.2887.