Callaghan, Helen Institutioneller Wandel im gegenwärtigen Kapitalismus, MPI for the Study of Societies, Max Planck Society;
Callaghan, H. (2012). Reversing the Causal Arrow: How Ownership Structure Shapes Party Positions in Britain, Germany and France. In M. Ido (Ed.), Varieties of Capitalism, Types of Democracy and Globalization (pp. 80-105). London: Routledge.