SUHARLINAH, S. PENINGKATAN HASIL BELAJAR FISIKA MELALUI MODEL PROBLEM BASED INSTRUCTION DI SMP NEGERI 1 AMBULU - JEMBER. Education Journal : Journal Educational Research and Development, [S. l.], v. 1, n. 1, p. 35–44, 2018. Disponível em: https://jurnal.unipar.ac.id/index.php/ej/article/view/86. Acesso em: 10 mar. 2025.