Louis O. Kelso, Patricia Hetter Kelso (1967). “Two-factor Theory: the Economics of Reality; how to Turn Eighty Million Workers Into Capitalists on Borrowed Money, and Other Proposals”, New York : Vintage Books
"'L'Ancien Régime et la Révolution' ('The Old Regime and the Revolution')". Book by Alexis de Tocqueville, translated by Gerald Bevan. Author's Foreword, 2008.