1. Bruzelius , C. Seeleib-Kaiser , M. European Citizenship and Social Rights Kennett , P. Lendvai , N. A Handbook of European Social Policy Cheltenham Edward Elgar
2. Economist 2014 EU Migration: The Gates are Open The Economist
3. European Commission 2016a Communication from the European Commission to the European Parliament, the Council, the Economic and Social Committee and the Committee of the Regions, Launching a Consultation on a European Pillar of Social Rights http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:52016DC0127