Gaya APA
Blank, L, T., Tarquin, A, J.
(1983).
Engineering Economy 2nd Edition
.
Singapore:
McGraw-Hill Book Company.
Gaya MLA
Blank, Leland, T., Tarquin, Anthony, J.
"Engineering Economy 2nd Edition".
Singapore:
McGraw-Hill Book Company,
1983.
Text.