1V. O. Key, Public Opinion and American Democracy, New York: Knopf, 1961. see also Carroll J. Glynn, S.Herbst, G.J.O'Keefe, & R.Y. Sh public opinion, Coloarado: Westview press, 1999, p. 299.
2Monroe, Public Opinion in America, New York: Dodd, 1975,p.6.
3Simon, Rita Jamrtes. Public Opinion in America : 1936 - 1970, Chicago:Rand McNall, 1974, p.7.
4Barbara A. Bardes and Robert W. Oldendick. Piblic Opinion : Measuring the American Mind. Wasdworth of Thomson Learning, Inc. 2003, p. 5.
5Converse, Philip E."Changing Conceptions of Public Opinion in the Political Process." Public Opinion Quarterly. Cited in Barbara A. Bardes and Robert W. Oldendick. Piblic Opinion: Measuring the Arnericn Mind . Wasdworth of Thomson Leaming Inc.2003,pp.5-6.
6Bhmer, Herbert. "Public Opinion and Public Opinion Polling". American Sociological Review. Cited in Robert S. Erikson and Kent L. Tedin, American Public Opinion : Its Qrigins , Content, and Impact, RR. Donnelley & Sons at Cmwfordsville, 2007, p.4.
7Cited in Robert S. Erikson and Kent L. Tedin, American Public Opinion:Its Qrigins, Content, and Impact, RR. Donnelley & Sons at Crawfordsville, 2007, p.4.
8Converse, Philip E. "Changing Conceptions of Public Opinion in the Political Process." Public Opinion Quarterly. Cited in Barbara A. Bardes and Robert W. Oldendick. Piblic Opinion : Measuring the American Mind. Wasdworth of Thomson Leaming, Inc.2003,p.6.
9Hennessy, Bernard H. Public Opinion, 4th ed. Monterey, CA: Brooks/Cole Publishing, 1981,p.4.
10Elisabeth. Noelle-Nemnann, The Spiral of Silence : Public Opinion- Our Social Skin, Chicago:University of Chicago Press, 1984,pp.62 - 63.
