<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold"> Kujala, Sari</hi> (2003): „User Involvement: A Review of the Benefits and Challenges“. <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">Behaviour & Information Technology</hi> 22 (1): 1–16. <ptr xmlns="http://www.tei-c.org/ns/1.0" target="https://doi.org/10.1080/01449290301782" />.