APA Style
Chapra, Umer M.. (2007).
An Introduction to Six Sigma & Process Improvement (NULL).
:
.
Chicago Style
Chapra, Umer M..
An Introduction to Six Sigma & Process Improvement.
NULL
:
,
2007.
Text.
MLA Style
Chapra, Umer M..
An Introduction to Six Sigma & Process Improvement.
NULL
:
,
2007.
Text.
Turabian Style
Chapra, Umer M..
An Introduction to Six Sigma & Process Improvement.
NULL
:
,
2007.
Print.