SULLIVAN, W. G. (2006). Engineering Economy / William G. Sullivan, Elin M. Wicks and James T. Luxhoj. Pearson Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)SULLIVAN, William G. Engineering Economy / William G. Sullivan, Elin M. Wicks and James T. Luxhoj. Pearson Prentice-Hall, 2006.
Lua MLA (8ú heag.)SULLIVAN, William G. Engineering Economy / William G. Sullivan, Elin M. Wicks and James T. Luxhoj. Pearson Prentice-Hall, 2006.
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