Gaya APA
Humphreys, K, K, (.
(1991).
Jelen`s cost and optimization engineering
(
3rd)
.
New York:
McGraw-Hall.
Gaya MLA
Humphreys, Kenneth, K., (edited).
"Jelen`s cost and optimization engineering".
3rd
New York:
McGraw-Hall,
1991.
Text.