Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.