Não informado. (1999). User modeling and user adapted interaction. Kluwer Academic Publishers.
Chicago-referens (17:e uppl.)Não informado. User Modeling and User Adapted Interaction. Dordrecht, Holanda: Kluwer Academic Publishers, 1999.
MLA-referens (8:e uppl.)Não informado. User Modeling and User Adapted Interaction. Kluwer Academic Publishers, 1999.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.