FARAH, A. A.; NUR, H. M. The Impact of Open-Book Testing Approach on the Achievement of EFL Sudanese Students at Tertiary Level. Journal of Faculty of Education, [S. l.], v. 18, 2023. Disponível em: https://onlinejournals.uofk.edu/index.php/JFE/article/view/1409. Acesso em: 23 jan. 2026.