Cita APA (7a ed.)

O'Leary, D. E. (2000). Enterprise Resource Planning Systems: : Systems, Life Cycle, Electronic Commerce, and Risk. Cambridge University Press.

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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