MUHAMMAD, Sukri. Peningkatan Hasil Belajar IPS Melalui Metode Problem Solving pada Siswa kelas IX SMP Negeri 3 Palopo. Jurnal Studi Guru dan Pembelajaran, [S. l.], v. 2, n. 2, p. 76–90, 2019. DOI: 10.30605/jsgp.2.2.2019.1359. Disponível em: https://www.e-journal.my.id/jsgp/article/view/12. Acesso em: 7 jul. 2025.