Lestari ES. Peningkatan Hasil Belajar Siswa Menggunakan Model Pembelajaran Problem Based Learning pada Materi Sistem Imunitas. basicedu [Internet]. 2022 Feb. 23 [cited 2024 Jul. 22];6(2):2687-93. Available from: https://jbasic.org/index.php/basicedu/article/view/2470