SUHARTO, Suharto; ZAMRONI, Zamroni. PENINGKATAN HASIL DAN AKTIVITAS BELAJAR IPS MODEL PROBLEM-BASED LEARNING BERBANTUAN MEDIA SMPN 2 KAWUNGANTEN. Harmoni Sosial: Jurnal Pendidikan IPS, [S. l.], v. 3, n. 1, p. 82–94, 2016. DOI: 10.21831/hsjpi.v3i1.9698. Disponível em: https://journal.uny.ac.id/index.php/hsjpi/article/view/9698. Acesso em: 7 may. 2025.