Cita APA (7a ed.)

Ridley, M. (2010). The rational optimist: How prosperity evolves (1st published in Great Britain.). Fourth Estate.

Cita Chicago Style (17a ed.)

Ridley, Matt. The Rational Optimist: How Prosperity Evolves. 1st published in Great Britain. London: Fourth Estate, 2010.

Cita MLA (9a ed.)

Ridley, Matt. The Rational Optimist: How Prosperity Evolves. 1st published in Great Britain. Fourth Estate, 2010.