ELECTRONIC DOCUMENT
BBC Horizon, "Arthur C. Clarke predicing the future in 1964," BBC, YouTube video, 3:13, http://www.youtube.com/watch?v=AOaZspeSBZU (accessed January 15, 2011).
US Census Bureau, "A New Portrait of America, First 2010 Census Results," US Census Bureau, http://2010.census.gov/news/press-kits/apportionment/apport.html (accessed January 21, 2011).