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”
Benjamin Graham, David Dodd (2009). “Security Analysis, Sixth Edition, Part V - Analysis of The Income Account. The Earnings Factor in Common-Stock Valuation”, p.405, McGraw Hill Professional