NEWNAN, D. G. (1990). Engineering Economic Analysis. Binarupa Aksara.
Lua i Stíl Chicago (17ú heag.)NEWNAN, Donald G. Engineering Economic Analysis. Binarupa Aksara, 1990.
Lua MLA (8ú heag.)NEWNAN, Donald G. Engineering Economic Analysis. Binarupa Aksara, 1990.
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