Big Difference. (2002) Little, Brown & Co., Boston. Le Bon, Gustav, Les Lois psychologiques de l'évolution des peuples. (1894) National Library of France, Paris. Le Bon, Gustave, The Crowd: A Study of the Popular Mind. (1895) Project Gutenberg. Martin, Everett Dean, The Behavior of Crowds (1920). McPhail, Clark. The Myth of the Madding Crowd (1991) Aldine-DeGruyter. Trotter, Wilfred, Instincts of the Herd in Peace and War. (1915) Macmillan, New York. Suroweicki, James: The Wisdom of Crowds: Why the Many Are Smarter Than the Few and How Collective Wisdom Shapes Business, Economies, *Societies and Nations. (2004) Little, Brown, Boston. Sunstein, Cass, Infotopia: How Many Minds Produce Knowledge. (2006) Oxford University Press, Oxford, United Kingdom. External links The Wisdom of Crowds and Iowa Electronic Market Statistics Figures of speech Social psychology Group processes zh-yue:羊群效應