1. Measuring party identification: an exploratory study with focus groups;Bartle;Electoral Studies,2002
2. Bartle, J., Crewe, I., 2000. The Measurement of Party Identification (Or Not, As The Case May Be). Mimeo. Department of Government, University of Essex.
3. Blais, A., Gidengil, E., Nadeau. R., Nevitte, N., 1999. Measuring party identification in Canada, Britain and the United States. Paper presented at the American Political Science Association Annual Conference, Atlanta, 2–5 September 1999.
4. Party identification, political preferences and material conditions: evidence from the British household panel survey, 1991-92;Brynin;Party Politics,1997
5. Political Change in Britain: The Evolution of Electoral Choice;Butler,1974