Editors. "Crown of Brittany unites with the Crown of France". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14775, accessed 20 December 2013.]
The Crown of Brittany is officially and finally united with the Crown of France, meaning that all future French sovereigns will automatically also become King of Brittany.