Apriani, An-Nisa, et al. “Penguatan Pendidikan Karakter Pada Masa New Normal Covid-19 Melalui Flipped Classroom”. Jurnal Penelitian Ilmu Pendidikan, vol. 14, no. 2, Oct. 2021, pp. 102-13, doi:10.21831/jpipfip.v14i2.37909.