Editors. "Elector of Saxony promises support to Archduke Ferdinand". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15793, accessed 22 May 2013.]
Archduke Ferdinand of Styria gains the support of John George, Elector of Saxony, in his campaign to become elected as King of the Romans, heir to the Holy Roman Empire.