APA aipamena

(2005). Six sigma for transactions and service. New York: McGraw-Hill.

Chicago Style aipamena

Six Sigma for Transactions and Service. New York: McGraw-Hill, 2005.

MLA aipamena

Six Sigma for Transactions and Service. New York: McGraw-Hill, 2005.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.