Gaya APA
Blank, L., Tarquin, A.
(2002).
Engineering Economy
(
Kelima)
.
Amerika Utara:
McGraw Hill Companis.
Gaya MLA
Blank, Leland., Tarquin, Anthony.
"Engineering Economy".
Kelima
Amerika Utara:
McGraw Hill Companis,
2002.
Text.