Bibliografia principal:
- Colin Hay, Michael Lister, David Marsh (Ed.s), The State: Theories and Issues, Hampshire, Palgrave Macmillan, 2006;
- Daniele Caramani (Ed.), Comparative Politics, OUP, 2017;
- Fukuyama, Francis; Political Order and Political Decay: From the Industrial Revolution to the Globalisation of Democracy, Profile Books, 2015;
- Fukuyama, Francis, The Origins of Political Order: From Prehuman Times to the French Revolution, Profile Books, 2012;
- Mcclelland, J. S., A History of Western Political Thought, Routledge, 1998;
- Moreira, Adriano, Ciência Política, Coimbra, Almedina, 2009;
- Pasquino, Gianfranco, Sistemas Políticos Comparados, Principia, 2007;