Cita APA (7th ed.)
Sullivan, W. G., Wicks, E. M., & Koelling , C. P. Engineering Economy (15a edición.). Prentice-Hall.
Cita Chicago (17th ed.)
Sullivan, William G., Elin M. Wicks, i C. Patrick Koelling. Engineering Economy. 15a edición. Upper Saddle River, EUA: Prentice-Hall.
Cita MLA (9th ed.)
Sullivan, William G., et al. Engineering Economy. 15a edición. Prentice-Hall.
Atenció: Aquestes cites poden no estar 100% correctes.