Hunamie, Maulidya, et al. “Pengaruh Model Pembelajaran Problem Based Learning Terhadap Hasil Belajar Materi Keberagaman Karakteristik Siswa Kelas II SD”. Action Research Journal Indonesia (ARJI), vol. 5, no. 3, Nov. 2023, pp. 113-20, doi:10.61227/arji.v5i3.124.