د. الفاتح الفضل محمد الحاج, and أ. موسى الطيب أحمد العبيد. “The Effect of Applying Standard Costing Methods in Control of Costs Elements : A Field Study of Some Industrial Companies in Sudan”. White Nile Journal for Studies and Research, no. 20 (September 1, 2022): 139–163. Accessed June 13, 2026. https://journals.wnu.edu.sd/index.php/wnjsr/article/view/73.