"Africa and the Six ‘I’s: Independence, Investment, Infrastructure, Innovation, Incubation, Inspiration" by Richard Attias, www.huffingtonpost.com. March 11, 2013.
Paco Underhill (2009). “Why We Buy: The Science of Shopping--Updated and Revised for the Internet, the Global Consumer, and Beyond”, p.24, Simon and Schuster
"Paul Krugman Calls for Space Aliens to Attack Earth Requiring Massive Defense Buildup to Stimulate Economy". "Fareed Zakaria GPS", www.newsbusters.org. August 14, 2011.