Gaya APA
Winer, R, S., Lehman, D, R.
(1944).
Product Management
(
Fourth Edition)
.
:
McGraw Hill.USA.
Gaya MLA
Winer, Russell, S.., Lehman, Donald, R..
"Product Management".
Fourth Edition
:
McGraw Hill.USA,
1944.
Koleksi World Bank.