1.
Lagut Harahap. Improving Student Learning Outcomes Using the Problem-Based Learning Model in Grade 4 at SDN 1105 Aek Bonban. JPG [Internet]. 2025 Mar. 14 [cited 2026 Jan. 22];1(1):40-4. Available from: https://journal.maalahliyah.sch.id/index.php/jpg/article/view/150