Gunanto, Y.E. and Supriyadi, L.A. 2021. A Case Study: Technological Pedagogical and Content Knowledge (TPACK) of Pre-service Physics Teacher to Enhance the 4C’s Skills During Online Learning. Jurnal Penelitian Pendidikan IPA. 7, 4 (Oct. 2021), 660–668. DOI:https://doi.org/10.29303/jppipa.v7i4.789.