APA način citiranja (7. izdanje)
ebrary, Inc, Antony, J., & Seow, C. (2004). Six sigma for operational excellence. Emerald Group Pub..
Čikaški stil citiranja (17. izdanje)
ebrary, Inc, Jiju Antony, i Christopher Seow. Six Sigma for Operational Excellence. [Bradford, England]: Emerald Group Pub., 2004.
MLA način citiranja (9. izdanje)
ebrary, Inc, et al. Six Sigma for Operational Excellence. Emerald Group Pub., 2004.
Upozorenje: Ovi citati možda nisu uvijek 100% točni.