NEWNAN, D. G. (2012). Engineering economic analysis eleventh edition. Ofxord University Press.
Lua i Stíl Chicago (17ú heag.)NEWNAN, Donald G. Engineering Economic Analysis Eleventh Edition. Ofxord University Press, 2012.
Lua MLA (8ú heag.)NEWNAN, Donald G. Engineering Economic Analysis Eleventh Edition. Ofxord University Press, 2012.
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