Norske stats husbank & Christophersen, J. (2002). Universal design: 17 ways of thinking and teaching. Husbanken.
Citazione stile Chigago Style (17a edizione)Norske stats husbank e Jon Christophersen. Universal Design: 17 Ways of Thinking and Teaching. [Oslo]: Husbanken, 2002.
Citatione MLA (9a ed.)Norske stats husbank e Jon Christophersen. Universal Design: 17 Ways of Thinking and Teaching. Husbanken, 2002.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.