Editors. "Ferdinand is recognised King of Hungary". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14388, accessed 18 April 2014.]
Ferdinand, Archduke of Austria and King of Bohemia, is recognised as King of Hungary by the Diet at Buda, in replacement of John Zapolya.