, A. (2012). Six Sigma Techniques between Administration and Statistics. kirkuk university journal for scientific studies, 34(106), 43-59.
Aza M. Abdulqadir . " Six Sigma Techniques between Administration and Statistics". kirkuk university journal for scientific studies, 34, 106, 2012, 43-59.
, A. (2012). ' Six Sigma Techniques between Administration and Statistics', kirkuk university journal for scientific studies, 34(106), pp. 43-59.
, A. Six Sigma Techniques between Administration and Statistics. kirkuk university journal for scientific studies, 2012; 34(106): 43-59.