Παραπομπή APA

Alter,, S. (2001). Information systems: A management perspective (3rd ed.). Pearson education.

Παραπομπή Chicago Style

Alter,, Steven. Information Systems: A Management Perspective. 3rd ed. New Jersey: Pearson education, 2001.

Παραπομπή MLA

Alter,, Steven. Information Systems: A Management Perspective. 3rd ed. Pearson education, 2001.