1. Aldridge, J., Kuby, P., & Strevy, D. (1992). Developing a metatheory of education. Psychological Reports, 70, 683–687.
2. Bain, K. (2004). What the best college teachers do. Cambridge, MA: Harvard University Press.
3. Bateson, G. (1972). Steps to an ecology of mind. New York: Basic Books.
4. Bourdieu, P. (1990). In other words: Essays towards a reflexive sociology. (M. Adamson, Trans.). Cambridge: Polity.
5. Boyd, R. D. (1989). ‘Facilitating personal transformation in small groups’. Small Group Behaviour, 20, 459–474.