Editors. "The Treaty of Saint Germain-en-Laye". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16096, accessed 12 December 2013.]
The Treaty of Saint Germain-en-Laye arranges for Cardinal Richelieu to purchase the services of Bernhard of Saxe-Weimar's army through paying him a regular subsidy.