APA aipamena

DeGarmo, E. P. (1979). Engineering economy. New York: Macmillan Publishing Co, Inc.

Chicago Style aipamena

DeGarmo, E. Paul. Engineering Economy. New York: Macmillan Publishing Co, Inc, 1979.

MLA aipamena

DeGarmo, E. Paul. Engineering Economy. New York: Macmillan Publishing Co, Inc, 1979.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.