Editors. "Zwingli's Confession is presented to Charles V". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14446, accessed 21 April 2014.]
In the wake of the Lutheran Confession of Augsburg, Zwingli's followers present an equivalent Confession of faith to Emperor Charles V.