APA aipamena

Gupta, P. (2005). The Six Sigma Performance handbookPraveen Gupta. McGraw-Hill.

Chicago Style aipamena

Gupta, Praveen. The Six Sigma Performance HandbookPraveen Gupta. McGraw-Hill, 2005.

MLA aipamena

Gupta, Praveen. The Six Sigma Performance HandbookPraveen Gupta. McGraw-Hill, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.