Gaya APA
Pande, P.
(2005).
What is Six Sigma : Berfikir Cepat six Sigma
(
2)
.
Yogyakarta:
Andi.
Gaya MLA
Pande, Pete.
"What is Six Sigma : Berfikir Cepat six Sigma".
2
Yogyakarta:
Andi,
2005.
Text.