1. V. O. Key, Jr., Politics, Parties, and Pressure Groups, 5th ed. (New York: Crowell, 1964), pp. 375–394;
2. Paul T. David, Ralph M. Goldman and Richard C. Bain, The Politics of National Party Conventions (Washington, D.C.: Brookings Institution, 1960), p. 249.
3. Howard L. Reiter, Selecting the President: The Nominating Process in Transition (Philadelphia: University of Pennsylvania, 1985), p. 121.
4. See Nelson Polsby, Consequences of Party Reform (New York: Oxford University Press, 1983); Howard L. Reiter, Selecting the President: The Nominating Process in Transition;
5. Gerald Pomper, Passions and Interests: Political Party Concepts of American Democracy (Lawrence: University Press of Kansas, 1992);