Corbett, Richard (1998) The European Parliament's Role in Closer EU Integration. London: Macmillan.
2.
Haas, Ernst (1958) The Uniting of Europe: Political, Social and Economic Forces 1950-1957. London: Stevens & Sons.
3.
Judge, David (1993) The Parliamentary State. London: Sage Publications.
4.
Moravcsik, Andrew (1998) The Choice for Europe: Social Purpose and State Power from Messina to Maastricht. Ithaca: Cornell University Press.
5.
Niedermayer, Oscar , and Richard Sinnott (1995) `Democratic Legitimacy and the European Parliament', in O. Niedermayer and R. Sinnott (eds) Public Opinion and Institutionalized Governance: Beliefs in Government, Volume Two. Oxford: Oxford University Press.
6.
Zaller, John (1992) The Nature and Origins of Mass Opinion. Cambridge: Cambridge University Press.
