APA (7. basım) Alıntı

DeGarmo,E.Paul. (1979). Engineering economy (6th.ed.). Macmillan.

Chicago Style (17. basım) Atıf

DeGarmo,E.Paul. Engineering Economy. 6th.ed. New York: Macmillan, 1979.

MLA (9th ed.) Atıf

DeGarmo,E.Paul. Engineering Economy. 6th.ed. Macmillan, 1979.