Cita APA (7th ed.)

Coper, A., Reimann, R., Cronin, D., & Noessel, C. About face: The essentials of interaction design (4a ed.).

Cita Chicago (17th ed.)

Coper, Alan, Robert Reimann, David Cronin, i Chirstopher Noessel. About Face: The Essentials of Interaction Design. 4a ed.

Cita MLA (8th ed.)

Coper, Alan, et al. About Face: The Essentials of Interaction Design. 4a ed.