The Holy Roman Emperor, Dutch and Spanish formally conclude a
Triple Alliance against France, which is joined later by the Pope
and Elector of Brandenburg.
Citation:
Editors. "Triple Alliance of Emperor, Dutch and Spanish against French".
The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16607, accessed 18 June 2013.]