In England, more modifications are added to the 'Humble Petition
and Advice', enhancing the power of Parliament.
Citation:
Editors. "Additional Petition and Advice enhances power of Parliament".
The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16428, accessed 18 June 2013.]