Gaya APA
Newnan, D, G.
(1990).
egineering economic analysis
(
Cet.1)
.
Jakarta Barat:
Binarpa Aksara.
Gaya MLA
Newnan, Donald, G..
"egineering economic analysis".
Cet.1
Jakarta Barat:
Binarpa Aksara,
1990.
Text.