Hidayati, U., and V. Rezania. “The Impact of Covid-19 on Online Learning in Grade 2 Elementary School Students: Dampak Covid-19 Terhadap Pembelajaran Online Pada Siswa Kelas 2 Sekolah Dasar”. Indonesian Journal of Education Methods Development, Vol. 17, no. 3, Aug. 2022, p. 10.21070/ijemd.v19i.654, doi:10.21070/ijemd.v19i.654.