A. F. Ahmad AL Basheer et M. Ahmed Abdelrahman, « Investigating Questions Formation Difficulties Encountered by Undergraduate University Students, (An applied study in Khartoum State, Gezira State, White Nile State ) », JAAS, vol. 5, nᵒ 16, p. 12, févr. 2023, Consulté le: oct. 09, 2026. Disponible sur: https://afroasian-studies.de/index.php/jass/article/view/175