JOHN CANNON. "Collins, (William) Wilkie." The Oxford Companion to British History. Oxford University Press. 2002. Encyclopedia.com. 17 Nov. 2009 <http://www.encyclopedia.com>.
JOHN CANNON. "Collins, (William) Wilkie." The Oxford Companion to British History. Oxford University Press. 2002. Encyclopedia.com. (November 17, 2009). http://www.encyclopedia.com/doc/1O110-CollinsWilliamWilkie.html
JOHN CANNON. "Collins, (William) Wilkie." The Oxford Companion to British History. Oxford University Press. 2002. Retrieved November 17, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O110-CollinsWilliamWilkie.html