John Heilemann and Mark Halperin. Game Change. New York: Harper, 2010, pp. 218-19.
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Sanford Horwitt. Let Them Call Me Rebel: Saul Alinsky, His Life and Legacy. New York: Vintage Books, 1992; Saul Alinsky. Reveille for Radicals, p. 25, http://books.google.com.