Rambe, Yusuf, Khaeruddin Khaeruddin, and Ma’ruf Ma’ruf. “Pengaruh Model Problem Based Learning Terhadap Kemampuan Berpikir Kritis Dan Hasil Belajar IPA Pada Siswa Sekolah Dasar”. Jurnal Riset dan Inovasi Pembelajaran 4, no. 1 (April 21, 2024): 341–355. Accessed October 27, 2025. https://etdci.org/journal/jrip/article/view/1372.