Putri, P. S. .; Amrullah, M. Habituation of Discipline Characters at SMP Muhammadiyah 6 Krian During the Covid-19 Pandemic: Pembiasaan Karakter Disiplin Pada Siswa SMP Muhammadiyah 6 Krian Dimasa Pandemi Covid-19. icecrs 2021, 10.