Cita APA (7th ed.)

Ritter, F. E., Baxter, G. D., & Churchill, E. F. Foundations for desgning user-centered systems: What system designers need to know about people.

Cita Chicago (17th ed.)

Ritter, Frank E., Gordon D. Baxter, i Elizabeth F. Churchill. Foundations for Desgning User-centered Systems: What System Designers Need to Know About People.

Cita MLA (8th ed.)

Ritter, Frank E., et al. Foundations for Desgning User-centered Systems: What System Designers Need to Know About People.