APA-referens (7:e uppl.)

Bass, I. (2007). Six sigma statistics with Excel and Minitab. McGraw-Hill.

Chicago-referens (17:e uppl.)

Bass, Issa. Six Sigma Statistics with Excel and Minitab. New York: McGraw-Hill, 2007.

MLA-referens (9:e uppl.)

Bass, Issa. Six Sigma Statistics with Excel and Minitab. McGraw-Hill, 2007.