Siti Nurjanah, Risma Dwi Arisona. PENGARUH MODEL PEMBELAJARAN PROBLEM BASED LEARNING (PBL) TERHADAP MOTIVASI BELAJAR IPS TERPADU PADA MATERI KEGIATAN EKONOMI. jiipsi [Internet]. 2021Jan.30 [cited 2024Jul.3];1(1):13-. Available from: https://ejournal.iainponorogo.ac.id/index.php/jiipsi/article/view/42