Betty Sinaga, Osco Parmonangan Sijabat, and Desi Sijabat. “PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR IPA SISWA KELAS V UPTD SD NEGERI 125546 PEMATANGSIANTAR”. Pengembangan Penelitian Pengabdian Jurnal Indonesia (P3JI), vol. 2, no. 2, May 2024, pp. 63-72, https://jurnal.migascentral.com/index.php/p3ji/article/view/204.