Suadi, Suadi, et al. “Teachers’ Perceptions on the Literacy Skills of 5th Grade Primary School Students During Covid-19 Pandemic in Mandailing Natal Regency”. Jurnal Kependidikan : Jurnal Hasil Penelitian Dan Kajian Kepustakaan Di Bidang Pendidikan, Pengajaran, Dan Pembelajaran, vol. 8, no. 2, June 2022, pp. 397-06, doi:10.33394/jk.v8i2.5075.