Cita APA (7th ed.)

Alter, S. (1999). Information systems: A management perspective (3rd ed.). Addison-Wesley.

Cita Chicago (17th ed.)

Alter, Steven. Information Systems: A Management Perspective. 3rd ed. Reading, Mass: Addison-Wesley, 1999.

Cita MLA (9th ed.)

Alter, Steven. Information Systems: A Management Perspective. 3rd ed. Addison-Wesley, 1999.