Cita APA (7th ed.)

DeGarmo, E. P., Canada, J. R., & Sullivan, W. G. (1979). Engineering economy (6th ed.). Macmillan.

Cita Chicago (17th ed.)

DeGarmo, Ernest Paul, John R. Canada, i William G. Sullivan. Engineering Economy. 6th ed. New York: Macmillan, 1979.

Cita MLA (9th ed.)

DeGarmo, Ernest Paul, et al. Engineering Economy. 6th ed. Macmillan, 1979.