Edwards, c. (1995). The essence of information systems. Prentice hall.
Chicago-čujuhus (17. p.)Edwards, chris. The Essence of Information Systems. New delhi: Prentice hall, 1995.
MLA-čujuhus (9. p.)Edwards, chris. The Essence of Information Systems. Prentice hall, 1995.
Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.