Não informado. (1999). User modeling and user adapted interaction. Kluwer Academic Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. User Modeling and User Adapted Interaction. Dordrecht, Holanda: Kluwer Academic Publishers, 1999.
Lua MLA (8ú heag.)Não informado. User Modeling and User Adapted Interaction. Kluwer Academic Publishers, 1999.
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