<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Nielsen, Jakob</hi> (1995): "10 Usability Heuristics for User Interface Design", in: <hi xmlns="http://www.tei-c.org/ns/1.0" rend="italic">Nielson Norman Group</hi>. Evidence-Based User Experience Research, Training, and Consulting<ref xmlns="http://www.tei-c.org/ns/1.0" target="http://www.nngroup.com/articles/ten-usability-heuristics/">http://www.nngroup.com/articles/ten-usability-heuristics/</ref> [letzter Zugriff 14. Oktober 2015].