Donata T.R. Y. Peningkatan Hasil Belajar IPS Melalui Model Pembelajaran Problem Based Learning (PBL) pada Siswa Kelas VIII-D SMP Negeri 1 Kembayan Kab. Sanggau Kalimantan Barat. JP3 [Internet]. 2022Feb.2 [cited 2025Jun.21];4(1):568-71. Available from: https://ejournal-jp3.com/index.php/Pendidikan/article/view/280