Gaya APA
ostwald, P, F., s.mclaren, T. (2004).
Cost Analysis and estimating for engineering and management .
america:
pearson prentice hall.
Gaya MLA
ostwald, Philip, F.., s.mclaren, Timothy.
"Cost Analysis and estimating for engineering and management".
america:
pearson prentice hall,
2004.
Text.