Suharto, Suharto, and Zamroni Zamroni. 2016. “PENINGKATAN HASIL DAN AKTIVITAS BELAJAR IPS MODEL PROBLEM-BASED LEARNING BERBANTUAN MEDIA SMPN 2 KAWUNGANTEN”. Harmoni Sosial: Jurnal Pendidikan IPS 3 (1):82-94. https://doi.org/10.21831/hsjpi.v3i1.9698.