1.
د. علي خليفه الشيخ عبد الله, د. ياسر تاج السر محمد سند. The Effect of Using Six Sigma Methodology Standards in Improving the Performance of the Internal Control System: A field study on government units in Algezira state. wnjsr [Internet]. 2020 Sep. 1 [cited 2026 Jun. 13];(16):81-105. Available from: https://journals.wnu.edu.sd/index.php/wnjsr/article/view/130