1.
Ritonga HD, Simangunsong N, Sari N. Pengaruh Model Problem Based Learning (PBL) untuk Meningkatkan Motivasi Belajar Siswa Kelas IV di SD Negeri 200106 Padangsidimpuan Utara. NJPPI [Internet]. 2023 Aug. 25 [cited 2026 May 3];1(1):65-7. Available from: https://ejournal.stitsyambtg.ac.id/index.php/nabawi/article/view/53