APA način citiranja (7. izdanje)

Ratzan, L. (2004). Understanding information systems: What they do and why we need them. American Library Association.

Čikaški stil citiranja (17. izdanje)

Ratzan, Lee. Understanding Information Systems: What They Do and Why We Need Them. Chicago: American Library Association, 2004.

MLA način citiranja (9. izdanje)

Ratzan, Lee. Understanding Information Systems: What They Do and Why We Need Them. American Library Association, 2004.