Istighfaroh, Faridatul.
" GAMIFIED ENGLISH LEARNING: EVALUATING DUOLINGO MOBILE APPS IMPACT ON DET PERFORMANCE AMONG INDONESIAN COLLEGE STUDENTS." <em>Jurnal Pendidikan Bahasa Inggris Proficiency</em> [Online], 7.2 (2025): 255-264. Web. 24 Jan. 2026