Arthur, J. (2004). The Six sigma instructor guide (2nd ed.). Macmillan.
Čikaški stil citiranjaArthur, Jay. The Six Sigma Instructor Guide. 2nd ed. Delhi: Macmillan, 2004.
MLA način citiranjaArthur, Jay. The Six Sigma Instructor Guide. 2nd ed. Macmillan, 2004.
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