1. Aitchison, Jean. "Bad Birds and Better Birds: Prototype Theory. Language: Introductory Readings. Ed. Virginia P. Clark, Paul A. Eschholz, and Alfred F. Rosa. 4th ed. New York: St. Martins, 1994. 445-459.
2. Dana, Jacqueline. "A Brief History of Orangeism in Ireland. 1998. LarkSpirit.com. 26 May 2004 .
3. "11 Trends to Watch in 2004. eMarketer. 2004. eMarketer, Inc. 21 Jan. 2004. 27 May 2004 .