Afriani, Titik, and Sepita Ferazona. 2021. “Cara Belajar Biologi Kelas XI IPA (Studi Kasus Di SMAN 1 Pendalian IV Koto Kabupaten Rokan Hulu Tahun Ajaran 2019 2020)”. Biology and Education Journal, October, 38-45. https://doi.org/10.25299/baej.2021.14404.