APA (7th ed.) Zitazioa
Alter, S. (2004). Information systems: The foundation of e-business (6th ed.). Pearson.
Chicago Style (17th ed.) Zitazioa
Alter, Steven. Information Systems: The Foundation of E-business. 6th ed. New Delhi: Pearson, 2004.
MLA (9th ed.) Zitazioa
Alter, Steven. Information Systems: The Foundation of E-business. 6th ed. Pearson, 2004.
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