Book Review: The Principle of Loyalty in EU Law, by Marcus Klamert. (Oxford: Oxford University Press, 2014) - Common Market Law Review View Book Review: The Principle of Loyalty in EU Law, by Marcus Klamert. (Oxford: Oxford University Press, 2014) by - Common Market Law Review Book Review: The Principle of Loyalty in EU Law, by Marcus Klamert. (Oxford: Oxford University Press, 2014) 52 3 Common Market Law Review