Nurma’ardi HD, Kuswaty M. Keefektifan Pembelajaran Problem Based Learning terhadap Kemampuan Berpikir Kritis dan Motivasi Belajar Siswa Sekolah Dasar. J. Instr. Dev. Res. [Internet]. 2023Aug.31 [cited 2025Oct.7];3(4):139-46. Available from: https://journal.iel-education.org/index.php/JIDeR/article/view/253