Cita APA (7a ed.)

Edwards, c. (1995). The essence of information systems. Prentice hall.

Cita Chicago Style (17a ed.)

Edwards, chris. The Essence of Information Systems. New delhi: Prentice hall, 1995.

Cita MLA (9a ed.)

Edwards, chris. The Essence of Information Systems. Prentice hall, 1995.