ABDALLA, Mohamed Elhassan.
 Multiple Choice Questions Revisited: Improvement of Validity for Fair Tests.
<strong>Gezira Journal of Health Sciences</strong>, [S.l.], v. 9, n. 1, june 2013.
ISSN 1810-5386. Available at: &lt;<a href="http://37.60.236.48/index.php/gjhs/article/view/399" target="_new">http://37.60.236.48/index.php/gjhs/article/view/399</a>&gt;. Date accessed: 03 june 2026.