A. N. Yazid and R. A. Sulaiman, “Dhiya Az Zahra Umrah Management System”, aitcs, vol. 6, no. 1, pp. 979–998, Jul. 2025, Accessed: Aug. 14, 2026. [Online]. Available: https://periodical.uthm.edu.my/index.php/aitcs/article/view/16371