Editors. "Charles Felix forces Charles Albert to renounce his claim to Piedmont". The Literary Encyclopedia. First published 30 December 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17801, accessed 23 April 2014.]
King Charles Felix of Piedmont issues a decree demanding his cousin Charles Albert, who is the favoured figurehead of the revolutionaries, to renounce his claim to throne of Piedmont.