Sugiyarto, Wahyu. “Peningkatan Hasil Belajar IPAS Melalui Model Pembelajaran Problem Based Learning (PBL) Siswa Sekolah Dasar”. Hamzanwadi Journal of Science Education, vol. 1, no. 1, Feb. 2024, pp. 45-52, doi:10.29408/hijase.v1i1.25669.