Editors. "John Knox preaches a defiant sermon that incites violent riots". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16279, accessed 25 May 2013.]
John Knox preaches a defiant sermon at Perth, inciting the Protestant Lords of the Congregation to rise. They seize Edinburgh and destroy religious houses at Stirling, Scone and St. Andrews, and subsequently approach Elizabeth I for aid.