Covid-19 Pandemic And Sustainability Study At Madrasah Ibtidaiyyah Pesantren Sabilil Muttaqien (PSM) Sulursewu, Teguhan, Ngawi, East Java. Jurnal Karya Abdi, [S. l.], v. 1, n. 2, p. 103–114, 2020. DOI: 10.32520/karyaabdi.v1i02.1156. Disponível em: https://ejournal.unisi.ac.id/index.php/karya/article/view/1156. Acesso em: 8 jun. 2026.