1. Apel, K.-O. (1995). Charles Peirce: From pragmatism to pragmaticism. Amherst: Prometheus Books.
2. Bateson, G. (1972). Steps to an ecology of mind: Collected essays in anthropology, psychiatry, evolution, and epistemology. Chicago: University of Chicago Press.
3. Bateson, G. (1980). Mind and nature: A necessary unity. New York: Bantam Books.
4. Bateson, G. (1987). Angels fear towards an epistemology of the sacred. New York: MacMillian.
5. Bohr, N. (1949). The Bohr-Einstein dialogue. Niels Bohr. A centenary volume (pp. 121–140). Cambridge, MA: Harvard University Press.