Benjamin Graham, Institute of Chartered Financial Analysts, Financial Analysts Research Foundation (1974). “The Renaissance of value: the proceedings of a seminar on the economy, interest rates, portfolio management, and bonds vs common stocks, September 18, 1974”
Alan G. Robinson (2009). “Ideas Are Free: How the Idea Revolution Is Liberating People and Transforming Organizations: Easyread Edition”, p.3, ReadHowYouWant.com