APA-referens (7:e uppl.)

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

Chicago-referens (17:e uppl.)

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

MLA-referens (9:e uppl.)

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