NEWMAN, D. G. (1990). Engineering economic analysis.-- ed.3. Bina Rupa Aksara.
Lua i Stíl Chicago (17ú heag.)NEWMAN, Donald G. Engineering Economic Analysis.-- Ed.3. Jakarta: Bina Rupa Aksara, 1990.
Lua MLA (9ú heag.)NEWMAN, Donald G. Engineering Economic Analysis.-- Ed.3. Bina Rupa Aksara, 1990.
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