TANG, S. (1991). Economics Feasibility Of Projects Managerial And Engineering Practice. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)TANG, S.L. Economics Feasibility Of Projects Managerial And Engineering Practice. McGraw-Hill, 1991.
Lua MLA (8ú heag.)TANG, S.L. Economics Feasibility Of Projects Managerial And Engineering Practice. McGraw-Hill, 1991.
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