THUESEN, G. (1989). Engineering Economy G.j. Thuesen; W.j. Fabrycky. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)THUESEN, G.J. Engineering Economy G.j. Thuesen; W.j. Fabrycky. Prentice-Hall, 1989.
Lua MLA (8ú heag.)THUESEN, G.J. Engineering Economy G.j. Thuesen; W.j. Fabrycky. Prentice-Hall, 1989.
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