1. Almond, G. A., & Verba, S. (1963). The Civic Culture: Political Attitudes and Democracy in Five Nations. Princeton: Princeton University Press.
2. Atkinson, R., Terizakis, G., & Zimmermann, K. (Eds.). (2011). Sustainability in European Environmental Policy. Challenges of Governance and Knowledge. London and New York: Routledge.
3. Bäck, H., Heinelt, H., & Magnier, A. (Eds.). (2006). The European Mayor. Political Leaders in the Changing Context of Local Democracy. Wiesbaden: VS Verlag für Sozialwissenschaften.
4. Berg, R., & Rao, N. (Eds.). (2005). Transforming Local Political Leadership. Houndmills: Palgrave.
5. Bertrana, X., & Heinelt, H. (2011a). Introduction. In H. Heinelt & X. Bertrana (Eds.), The Second Tier of Local Government in Europe. Provinces, Counties, Départements and Landkreise in Comparison (pp. 1–26). London and New York: Routledge.