Ahmad CK. The Role of Using Six Sigma Approach for Activating and Improving the Internal Audit , and its reflections on the Quality of Accounting Information: Exploratory Research in a Sample of Commercial Banks in Sulaymaniyah. J Univ Hum Dev [Internet]. 2017 Aug. 31 [cited 2024 Nov. 23];3(3):347-70. Available from: https://journals.uhd.edu.iq/index.php/juhd/article/view/366