"Carrie Chapman Catt." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. 10 Dec. 2009 <http://www.encyclopedia.com>.
"Carrie Chapman Catt." The Columbia Encyclopedia, Sixth Edition. 2008. Encyclopedia.com. (December 10, 2009). http://www.encyclopedia.com/doc/1E1-Catt-Car.html
"Carrie Chapman Catt." The Columbia Encyclopedia, Sixth Edition. 2008. Retrieved December 10, 2009 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-Catt-Car.html