Ferdinand of Bohemia and John Zápolya sign a truce, calling to a
halt their tussle over the throne of Hungary.
Citation:
Editors. "Ferdinand of Bohemia and John Zápolya sign a truce".
The Literary Encyclopedia. First published 01 November 2010
[http://litencyc.com/php/stopics.php?rec=true&UID=14464, accessed 19 June 2013.]