Aljaaidi, K. S., and O. A. Bagais. “Debt Finance, Inventory Management and Economic Value of Energy Industry in Saudi Arabia: Empirical Investigation”. International Journal of Energy Economics and Policy, vol. 10, no. 6, Oct. 2020, pp. 347-53, https://www.econjournals.com/index.php/ijeep/article/view/10085.