1. Ackoff, R.L. 1994. The democratic corporation. New York: Oxford University Press.
2. Ackoff, R.L. 1999. Re-creating the corporation: A design of organizations for the 21st century. New York: Oxford University Press.
3. Ackoff, R.L., and F.E. Emery. 1972. On purposeful systems. Chicago: Aldine-Atherton.
4. Ashby, R.W. 1956. An introduction to cybernetics. London: Chapman & Hall.
5. Boehm, C. 2001. Hierarchy in the forest: The evolution of egalitarian behavior. Cambridge, MA: Harvard University Press.