Editors. "Peace negotiations between Spain and her enemies founder". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=15557, accessed 21 May 2013.]
The peace negotiations currently being held at Bergen op Zoom between Spain and the United Provinces, and between Spain and England at Boulogne, struggle to reach an agreement.