Blank, L. T. (1989). Engineering Economy / Leland T. Blank And Anthony J. Tarquin. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Blank, Leland T. Engineering Economy / Leland T. Blank And Anthony J. Tarquin. McGraw-Hill, 1989.
Lua MLA (8ú heag.)Blank, Leland T. Engineering Economy / Leland T. Blank And Anthony J. Tarquin. McGraw-Hill, 1989.
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