1. Aristotle, Posterior Analytics (71a 1). Translated by Jonathan Barnes (1984/95).
2. Aristotle. (1934) Nicomachean Ethics. Rackham, H. ed. (1934) Aristotle in 23 Volumes. Vol. 19. Translated by H. Rackham. Cambridge, MA: Harvard University Press; London: William Heinemann Ltd. Available at: Perseus Digital Library Project. Ed. Crane, G.R. (2011) Tufts University. 15.12.11. http://www.perseus.tufts.edu/hopper/text?doc=Perseus: text: 1999.01.0054: book=1: chapter=7&highlight=excellence
3. Audi, R. (1998) Epistemology: A Contemporary Introduction to the Theory of Knowledge. Oxon: Routledge.
4. Ausubel, D. (1978) ‘In defense of advance organizers: A reply to the critics’. Review of Educational Research. 48, pp. 251–257.
5. Avis, J. (1999) ‘Shifting identity: New conditions and the transformation of practice – teaching within post-compulsory education’. Journal of Vocational Education and Training. 5, pp. 245–264.