APA (7th ed.) Citation

DeGarmo, E. P., Canada, J. R., & Sullivan, W. G. (1984). Engineering economy (7th ed.). Macmillan.

Chicago Style (17th ed.) Citation

DeGarmo, E. Paul, John R. Canada, and William G. Sullivan. Engineering Economy. 7th ed. New York: Macmillan, 1984.

MLA (9th ed.) Citation

DeGarmo, E. Paul, et al. Engineering Economy. 7th ed. Macmillan, 1984.