• Aune B. (2008) An empiricist theory of knowledge. Available at: (retrieved 20 August 2009).
  • Clegg J. A. (2000) Beyond ethical individualism. Journal of Intellectual Disability Research 44, 111.
  • Freidson E. (2001) Professionalism: The Third Logic. University of Chicago Press, Chicago, IL.
  • Gelwick R. (1987) The Way of Discovery: An Introduction to the Thought of Michael Polanyi. Oxford University Press, New York.
  • Hildreth P. J. & Kimble C. (2002) The duality of knowledge. Information research, Available at: (retrieved 31 October 2008).
  • Kimble C., Hildreth P. J. & Wright P. (2001) Communities of practice. In: Knowledge Management and Business Innovation (ed. Y.Malhotra), pp. 21630. Idea Group, Hersley, PA.
  • Nonaka I. (1991) The knowledge creating company. Harvard Business Review 69, 96104.
  • Polanyi M. (1958) Personal Knowledge. Towards A Post Critical Philosophy. Routledge, London.
  • Polanyi M. (1967) The Tacit Dimension. Doubleday, New York.
  • Polanyi M. (1969) Knowing and Being. Routledge, London.
  • Reinders H. (2008a) The transformation of human services. Journal of Intellectual Disability Research 52 (Pt 7), 56472.
  • Reinders H. (2008b) Internal and external goods: a philosophical critique of the hybridization of professionalism. Journal of Intellectual Disability Research 52 (Pt 7), 6348.
  • Schuengel C., Kef S., Damen S. & Worm M. (2009) People who need people. Attachment and professional caregiving. Journal of Intellectual Disability Research 54 (Suppl. 1), 3847.
  • Scott D. (1995) Everyman Revived: The Common Sense of Michael Polanyi. William Eerdmans, New York.
  • Smith M. K. (2003) Michael Polanyi and tacit knowledge. The Encyclopedia of Informal Education, Available at: (retrieved 10 November 2008).
  • Wuertz K. & Reinders H. (2009) De kunst van het zorgen. Over verbinding in de zorg voor mensen met een verstandelijke beperking. (The Art of Caring. On Connectedness in caring for People with Learning Disabilities). Garant, Antwerp.