Anthony ARNULL (ed), Daniel WINCOTT (ed), Accountability and Legitimacy in the European Union, Oxford, Oxford University Press, 2002, 201-222, Oxford studies in European law
DE WITTE, Bruno, DE BURCA, Grainne, The Delimitation of Powers between the EU and its Member States, in Anthony ARNULL (ed), Daniel WINCOTT (ed), Accountability and Legitimacy in the European Union, Oxford, Oxford University Press, 2002, 201-222, Oxford studies in European law
- https://hdl.handle.net/1814/4073