RAHAYU, Rina; LAKSONO FX, Endang Widjayanti. PENGEMBANGAN PERANGKAT PEMBELAJARAN IPA BERBASIS PROBLEM BASED LEARNING DI SMP. Jurnal Kependidikan: Penelitian Inovasi Pembelajaran, [S. l.], v. 45, n. 1, 2015. DOI: 10.21831/jk.v45i1.7184. Disponível em: https://journal.uny.ac.id/index.php/jk/article/view/7184. Acesso em: 12 may. 2025.