Nurjanah, Siti. “KEEFEKTIFAN METODE PROBLEM BASED LEARNING PADA PEMBELAJARAN IPS TERHADAP HASIL BELAJAR PESERTA DIDIK SMPN 1 JETIS BANTUL”. JIPSINDO 1, no. 2 (February 4, 2015): 183–204. Accessed January 14, 2026. https://journal.uny.ac.id/index.php/jipsindo/article/view/2888.