1. Metaphor and knowledge;FR Ankersmit,1993
2. Austin, J. L. (1962). How to do things with words. Cambridge, MA: Harvard University Press.
3. Barrows, E. M. (2001). Animal behavior desk reference: A dictionary of animal behavior, ecology and evolution. Boca Raton, FL: CRC Press.
4. Bateson, G. (1972). Steps to an ecology of mind (1st ed.). Chicago, IL: University of Chicago Press. Excerpts, Google Books.
5. Bateson, G. (1979). Mind and nature: A necessary unity (1st ed.). (Advances in systems theory, complexity, and the human sciences). Cresskill, NJ: Hampton Press. (Originally published by Bantam, 1979). Excerpts, http://www.oikos.org/mind&nature.htm