Maartje DE VISSER and Anne Pieter VAN DER MEI (eds), The Treaty on European Union 1993-2013 : reflections from Maastricht, Antwerp : Intersentia, 2013, pp. 53-76, Ius commune europaeum ; 123
DE WITTE, Bruno, The elusive unity of the EU legal order after Maastricht, in Maartje DE VISSER and Anne Pieter VAN DER MEI (eds), The Treaty on European Union 1993-2013 : reflections from Maastricht, Antwerp : Intersentia, 2013, pp. 53-76, Ius commune europaeum ; 123
- https://hdl.handle.net/1814/29350