Al-Ghalbi, Mohammad Saad. “The Role of Transformational Leadership in Improving the Performance of the Hajj and Umrah System”. Journal of Economic, Administrative and Legal Sciences 8, no. 1 (January 28, 2024): 87–102. Accessed December 19, 2025. https://www.ajsrp.ojsexpert.com/index.php/jeals/article/view/7265.