"Robert Arthur Talbot Gascoyne- Cecil." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 30 Nov. 2009 <http://www.encyclopedia.com>.
"Robert Arthur Talbot Gascoyne- Cecil." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (November 30, 2009). http://www.encyclopedia.com/doc/1E1-X-CecilRAT.html
"Robert Arthur Talbot Gascoyne- Cecil." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved November 30, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-X-CecilRAT.html