Não informado. (1976). Engineering Costs and Production Economics. Elsevier Science Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. Engineering Costs and Production Economics. Amsterdam: Elsevier Science Publishers, 1976.
Lua MLA (8ú heag.)Não informado. Engineering Costs and Production Economics. Elsevier Science Publishers, 1976.
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