Gaya APA
Lehmann, D, R., Winer, R, S.
(2005).
PRODUCT MANAGEMENT
(
4)
.
Singapura:
McGraw Hill.
Gaya MLA
Lehmann, Donald, R.., Winer, Russell, S..
"PRODUCT MANAGEMENT".
4
Singapura:
McGraw Hill,
2005.
Text.