Παραπομπή APA
Smith, G. W. (1973). Engineering economy: Analysis of capital expenditures (2d ed.). Ames: Iowa State University Press.
Παραπομπή Chicago StyleSmith, Gerald W. Engineering Economy: Analysis of Capital Expenditures. 2d ed. Ames: Iowa State University Press, 1973.
Παραπομπή MLASmith, Gerald W. Engineering Economy: Analysis of Capital Expenditures. 2d ed. Ames: Iowa State University Press, 1973.
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