YOUSEF, A.; THUNEIBAT, A. Effect of Using Six Sigma Methodolgy in Improving Quality Control over External Audit in Jordan. Jordan Journal of Business Administration, [S. l.], v. 15, n. 4, 2019. Disponível em: https://archives.ju.edu.jo/index.php/JJBA/article/view/102298. Acesso em: 23 feb. 2026.