Yuniwati, Y., and Muhsinatun Siasah Masruri. “PENINGKATAN KUALITAS PEMBELAJARAN PPKN MELALUI PENERAPAN PROBLEM BASED LEARNING DI SMP”. Harmoni Sosial: Jurnal Pendidikan IPS 3, no. 2 (December 6, 2016): 199–210. Accessed May 15, 2025. https://jurnal.uny.ac.id/index.php/hsjpi/article/view/7947.