Septi, Septia Uswatun Hasanah, and Muhammad Zajuli. “INCREASING STUDENTS’ ENGAGEMENT AND ACADEMIC ACHIEVEMENT THROUGH THE INTEGRATION OF PROBLEM-BASED LEARNING AND DIFFERENTIATED INSTRUCTION MODELS AT SMA NEGERI 6 KABUPATEN LAMPUNG TIMUR”. JETA (Journal of English Teaching and Applied Linguistic) 6, no. 1 (May 30, 2025): 1–9. Accessed February 7, 2026. https://jurnal2.stkippgribl.ac.id/index.php/jeta/article/view/1923.