Dyfyniad APA

 Preece, J. (2015).  Interaction design: Beyond human-computer interaction.  Wiley.

Dyfyniad Arddull Chicago

 Preece, Jenny.  Interaction Design: Beyond Human-computer Interaction.  Wiley, 2015.

Dyfyniad MLA

 Preece, Jenny.  Interaction Design: Beyond Human-computer Interaction.  Wiley, 2015.

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