Gaya APA

Kubiak, T, M., Benbow, D, W. (2009). THE CERTIFIED SIX SIGMA BLACKBELT HANDBOOK E-BOOK (Ed. 2). Milwaukee: ASQ Qualty Press.

Gaya MLA

Kubiak, T., M.., Benbow, Donald, W.. "THE CERTIFIED SIX SIGMA BLACKBELT HANDBOOK E-BOOK". Ed. 2 Milwaukee: ASQ Qualty Press, 2009. Text.