KHLAIF, Zuheir N; SALHA, Soheil; FAREED, Shahid; RASHED, Hadi. The Hidden Shadow of Coronavirus on Education in Developing Countries. Online Learning, Boston, MA, v. 25, n. 1, 2021. DOI: 10.24059/olj.v25i1.2287. Disponível em: https://olj.onlinelearningconsortium.org/index.php/olj/article/view/2287. Acesso em: 4 apr. 2026.