APA (7th ed.) Zitazioa
Ostwald, P. F. (1974). Cost estimating for engineering and management. Prentice-Hall.
Chicago Style (17th ed.) Zitazioa
Ostwald, Phillip F. Cost Estimating for Engineering and Management. Englewood Cliffs, N.J.: Prentice-Hall, 1974.
MLA (9th ed.) Zitazioa
Ostwald, Phillip F. Cost Estimating for Engineering and Management. Prentice-Hall, 1974.
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