1. Tufte, E.R.: Envisioning Information. Graphic Press, Connecticut (1990)
2. Papert, S.: Situating Constructionism. In: Edit, Harel (ed.), Constructionism: Research Reports and Essays, 1985–1990. Alex Publishing Corp., Norwood, NJ (1991)
3. Nardi, B.A. (ed.): Context and Consciousness, 2nd edn. MIT Press, Cambridge, Massachusetts (1997)
4. Nielsen, J., Tahir, M.: Homepage Usability: 50 Websites Deconstructed. New Riders Publishing, Indianapolis (2001)
5. Norman, D.A.: The Psychology of Everyday Things. Basic Book, New York (1989)