Nugrahaningrum, R. and Wati, T. L. (2022) “Teacher Implementation in the Mumtaz Smart Application during the Covid-19 Pandemic in Elementary Schools: Implementasi Guru dalam Aplikasi Mumtaz Smart dimasa Pandemi Covid-19 di Sekolah Dasar”, Indonesian Journal of Education Methods Development, 17(4), p. 10.21070/ijemd.v20i.663. doi: 10.21070/ijemd.v20i.663.