Edwards, C. 1., Bytheway, A., Ward, J., Ward, J. R., & Bytheway, A. (1991). The essence of information systems. New York: Prentice Hall.
Παραπομπή Chicago StyleEdwards, Chris 1947-, A. Bytheway, John Ward, John Robert Ward, and Andy Bytheway. The Essence of Information Systems. New York: Prentice Hall, 1991.
Παραπομπή MLAEdwards, Chris 1947-, et al. The Essence of Information Systems. New York: Prentice Hall, 1991.
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