APA (7th ed.) Citation

DeGarmo, E. P., Sullivan, W. G., & Bontadelli, J. A. (1993). Engineering economy (9th ed.). EDCA Pub. & Dist. Corp.

Chicago Style (17th ed.) Citation

DeGarmo, E. Paul, William G. Sullivan, and James A. Bontadelli. Engineering Economy. 9th ed. Quezon City: EDCA Pub. & Dist. Corp, 1993.

MLA (9th ed.) Citation

DeGarmo, E. Paul, et al. Engineering Economy. 9th ed. EDCA Pub. & Dist. Corp, 1993.