Gaya APA
KHOLIL, A, S, ,, M.
(2013).
SIX SIGMA : QUALITY FOR BUSINESS IMPROVEMENT
(
1)
.
YOGYAKARTA:
GRAHA ILMU.
Gaya MLA
KHOLIL, AMIN, SYUKRON, ,, MUHAMMAD.
"SIX SIGMA : QUALITY FOR BUSINESS IMPROVEMENT".
1
YOGYAKARTA:
GRAHA ILMU,
2013.
Text.