root, root. “The Role of Non-Oil Revenues in Some Indicators of Economic Development in the Kingdom of Saudi Arabia for the Period (2004-2020)”. Warith Scientific Journal 5, no. 14 (July 12, 2023): 308-321. Accessed May 9, 2024. http://wsj.uowa.edu.iq/index.php/warith/article/view/151.