Armita Ningsih, A. N. (2023) “Penerapan PBL (Problem Based Learning) Untuk Meningkatkan Hasil Belajar Siswa Pada Materi Sistem Pernapasan Di SMAN Imelda Medan: (Application Of The PBL (Problem Based Learning) To Improve Student Learning Outcomes On The Respiratory System Material At Imelda Private High School Medan)”, BIODIK, 9(2), pp. 1–4. doi: 10.22437/biodik.v9i2.19717.