Sihombing, D. K. et al. 2024. Implementation of Problem Based Learning Model in Improving Student Learning Outcomes in Islamic Education Learning at SD Negeri 100503 Tapus Sipagabu. Jurnal Pendidikan Profesi Guru. 2, 1 (Feb. 2024), 129–135. DOI:https://doi.org/10.22373/jppg.v2i1.6761.