Editors. "Bavaria joins the Schmalkaldic League despite being a Catholic state". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14474, accessed 12 December 2013.]
Out of politically motivated desire to oppose Charles V, Bavaria joins the predominantly Lutheran Schmalkaldic League, despite its being a Catholic state.