Upaya Peningkatan Hasil Belajar Kognitif Melalui Model Problem Based Learning. BIOTIK: Jurnal Ilmiah Biologi Teknologi dan Kependidikan, [S. l.], v. 1, n. 2, p. 87–92, 2015. DOI: 10.22373/biotik.v1i2.218. Disponível em: https://jurnal.ar-raniry.ac.id/index.php/biotik/article/view/218. Acesso em: 5 oct. 2025.