APA aipamena

DeGarmo, E. P. (1997). Engineering economy (10th ed.). Prentice Hall.

Chicago Style aipamena

DeGarmo, Ernest Paul. Engineering Economy. 10th ed. Upper Saddle River, NJ: Prentice Hall, 1997.

MLA aipamena

DeGarmo, Ernest Paul. Engineering Economy. 10th ed. Prentice Hall, 1997.