1. Acemoglu, D. and Robinson, J. (1999) 'Democratization or repression?', CEPR Discussion Paper, July, Boston, MA: MIT.
2. Adnett, N. (1996) European Labour Markets: Analysis and Policy, Harlow: Addison Wesley Longman.
3. Argyris, C. and Schon, D. (1978) Organizational Learning: A Theory of Action Perspective, Reading, MA: Addison-Wesley.
4. Bateson, G. (1973) Steps to an Ecology of the Mind, Frogmore: Paladin.
5. Becker, G. (1975) Human Capital Theory, 2nd edn, New York: Columbia University Press.