Zebua, J.I.P.S., Gulo, H. , Waruwu, T. , Harefa, A.R. and Lase, N.K. 2025. PENGEMBANGAN BUKU SAKU IPA BERBASIS PROBLEM BASED LEARNING DI UPTD SMP NEGERI 8 GUNUNGSITOLI. SECONDARY: Jurnal Inovasi Pendidikan Menengah . 5, 4 (Dec. 2025), 732-741. DOI:https://doi.org/10.51878/secondary.v5i4.8570.