عبدالله, موسي يوسف et al.
 Gezira Student Net Work Organization.
<strong>Gezira Journal of Health Sciences</strong>, [S.l.], v. 1, n. 2, jan. 2005.
ISSN 1810-5386. Available at: &lt;<a href="http://journals.uofg.edu.sd/index.php/gjhs/article/view/201" target="_new">http://journals.uofg.edu.sd/index.php/gjhs/article/view/201</a>&gt;. Date accessed: 27 july 2026.