Ridley, M. (2010). The rational optimist: How prosperity evolves (1st U.S. ed.). Harper.
Cita Chicago Style (17a ed.)Ridley, Matt. The Rational Optimist: How Prosperity Evolves. 1st U.S. ed. New York: Harper, 2010.
Cita MLA (8a ed.)Ridley, Matt. The Rational Optimist: How Prosperity Evolves. 1st U.S. ed. Harper, 2010.
Precaución: Estas citas no son 100% exactas.