Prayogo S. Peningkatan Kedisiplinan dan Hasil Belajar Siswa Mata Pelajaran PKn Kelas II Sekolah Dasar melalui Model Pembelajaran Problem Based Learning. basicedu [Internet]. 2022 Jun. 21 [cited 2024 May 4];6(5):7934-40. Available from: https://jbasic.org/index.php/basicedu/article/view/3675