ZEBUA, J. I. P. S.; GULO, H. .; WARUWU, T. .; HAREFA, A. R. .; LASE, N. K. . PENGEMBANGAN BUKU SAKU IPA BERBASIS PROBLEM BASED LEARNING DI UPTD SMP NEGERI 8 GUNUNGSITOLI. SECONDARY: Jurnal Inovasi Pendidikan Menengah , [S. l.], v. 5, n. 4, p. 732-741, 2025. DOI: 10.51878/secondary.v5i4.8570. Disponível em: https://jurnalp4i.com/index.php/secondary/article/view/8570. Acesso em: 13 feb. 2026.