Ritter, F. E., Baxter, G. D., & Churchill, E. F. Foundations for desgning user-centered systems: What system designers need to know about people.
Chicago-Zitierstil (17. Ausg.)Ritter, Frank E., Gordon D. Baxter, und Elizabeth F. Churchill. Foundations for Desgning User-centered Systems: What System Designers Need to Know About People.
MLA-Zitierstil (8. Ausg.)Ritter, Frank E., et al. Foundations for Desgning User-centered Systems: What System Designers Need to Know About People.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.