APA
Valter L., . (2023). Understanding Six Sigma. [S.I.]: Phoenix Publications.
Chicago
Valter Luke, . 2023. Understanding Six Sigma. [S.I.]: Phoenix Publications.
Harvard
Valter L., . (2023). Understanding Six Sigma. [S.I.]: Phoenix Publications.
MLA
Valter Luke, . Understanding Six Sigma. [S.I.]: Phoenix Publications. 2023.