Lua APA (7ú heag.)
Ostwald, P. F. (1974). Cost estimating for engineering and management. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)
Ostwald, Phillip F. Cost Estimating for Engineering and Management. Englewood Cliffs, N.J.: Prentice-Hall, 1974.
Lua MLA (9ú heag.)
Ostwald, Phillip F. Cost Estimating for Engineering and Management. Prentice-Hall, 1974.
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