References
 
  Britannica.com Inc. Hypertext (1994-2000). Retrieved February 20, 2001 from the World Wide Web: http://www.britannica.com/bcom/eb/article/7/0,5716,1637+1+1629,00.html?query=hypertext

Farkas, David K. & Farkas, Jean B. (1998-2000). Website Design: Theory and Principles. Unpublished manuscript.

Nielsen, Jakob (2000). Designing Web Usability. Indiana: New Riders Publishing.

Qpass® Inc. Site Map (2001). Retrieved February 20, 2001 from the World Wide Web: http://www.qpass.com/SiteMap.asp?Section=ci

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