Subnarulloh, Ibnu Muthi. Peranan Model Pembelajaran Problem Based Learning (PBL) Dalam Pengembangan Keterampilan Abad ke-21 Siswa Sekolah Dasar. JIM [Internet]. 2024 Oct. 1 [cited 2026 Apr. 25];2(9):455-60. Available from: https://ejournal.lumbungpare.org/index.php/jim/article/view/410