Editors. "Papacy joins Sardinia against Austria". The Literary Encyclopedia. First published 30 December 2011; last revised 30 November -1.
[http://www.litencyc.com/php/stopics.php?rec=true&UID=18146, accessed 27 April 2015.]
Sardinia is joined by the papacy in its fight against Austria in the cause of Italian unification.
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