Septi, S. U. H., 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), vol. 6, no. 1, May 2025, pp. 1-9, https://jurnal.stkippgribl.ac.id/index.php/jeta/article/view/1923.