APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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