DeGarmo, E. P. (1997). Engineering economy (10th ed.). Prentice Hall.
Chicago Style (17th ed.) CitationDeGarmo, Ernest Paul. Engineering Economy. 10th ed. Upper Saddle River, N.J: Prentice Hall, 1997.
ציטוט MLADeGarmo, Ernest Paul. Engineering Economy. 10th ed. Prentice Hall, 1997.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.