1. Bingle, P. (1995, “Lobbying is too important to leave to ‘pros’”, PR Week, 31 March.
2. Birnbaum, J.H. (1992, The Lobbyists, Times Books, New York, NY.
3. Business Questions (1993, 28 January.
4. Butler, D., Adonis, A. and Travers, T. (1994, Failures in British Politics: The politics of the Poll Tax, OUP, Oxford.
5. Carville, J. and Matalin, M. with Knobler P. (1994, All’s Fair: Love, War and Running for President, Random House, London.