1. LeBon G., The Crowd (Transaction Publishers, New Brunswick, NJ, 1895/1995).
2. Janis I. L., Groupthink: Psychological Studies of Policy Decisions and Fiascoes (Houghton Mifflin, Boston, MA, ed. 2, 1972).
3. Osborn A. F., Applied Imagination (Scribner, New York, 1957).
4. Vox Populi
5. Surowiecki J., The Wisdom of Crowds (Doubleday, New York, 2004).