Book Review: EU Citizenship & the Constitutionalisation of the European Union, by Hanneke van Eijken. (Groningen: Europa Law Publishing, 2015) - Common Market Law Review View Book Review: EU Citizenship & the Constitutionalisation of the European Union, by Hanneke van Eijken. (Groningen: Europa Law Publishing, 2015) by - Common Market Law Review Book Review: EU Citizenship & the Constitutionalisation of the European Union, by Hanneke van Eijken. (Groningen: Europa Law Publishing, 2015) 53 3 Common Market Law Review