Cita APA (7th ed.)

O'Leary, D. E. (2000). Enterprise resource planning systems: Systems, life cycle, electronic commerce, and risk. Cambridge University Press.

Cita Chicago (17th ed.)

O'Leary, Daniel Edmund. Enterprise Resource Planning Systems: Systems, Life Cycle, Electronic Commerce, and Risk. Cambridge, [Eng.]: Cambridge University Press, 2000.

Cita MLA (9th ed.)

O'Leary, Daniel Edmund. Enterprise Resource Planning Systems: Systems, Life Cycle, Electronic Commerce, and Risk. Cambridge University Press, 2000.