Gultom, Fransiskus, Hernawaty Hernawaty, and Poniyah Simanullang. 2022. “Implementation of Innovative Learning Models in Chemistry Lessons During the Covid-19 Pandemic”. Jurnal Penelitian Pendidikan IPA 8 (3):1443-46. https://doi.org/10.29303/jppipa.v8i3.1658.