Sari, Gurita. " DAMPAK SISTEM KEGIATAN BELAJAR MENGAJAR (KBM) DARING AKIBAT COVID-19 TERHADAP SISWA." Jurnal IKA PGSD (Ikatan Alumni PGSD) UNARS [Online], 8.2 (2020): 462 - 470. Web. 23 Dec. 2024