Gaya APA
Pande, P., Holpp, L.
(2002).
Berfikir cepat six sigma : What is six sigma
.
Yogyakarta:
Andi.
Gaya MLA
Pande, Pete., Holpp, Larry.
"Berfikir cepat six sigma : What is six sigma".
Yogyakarta:
Andi,
2002.
Text.