Utina, Fatma N., Ani M. Hasan, and Djuna Lamondo. 2022. “A Study of Online Learning Studies in Natural Sciences Subject in Biology Topic During the Covid-19 Pandemic ”. Jurnal Penelitian Pendidikan IPA 8 (4):2019-27. https://doi.org/10.29303/jppipa.v8i4.1943.