Mujiati M. Penerapan Model Pembelajaran Problem Based Learning (PBL) dalam Peningkatan Aktivitas Hasil Belajar IPS di SMPN 3 Loa Janan Kab. Kutai Kartanegara Kalimantan Timur. JP3 [Internet]. 2022Feb.3 [cited 2025Jul.19];4(2). Available from: https://ejournal-jp3.com/index.php/Pendidikan/article/view/326