Patten, C. (2008). What next?: Surviving the twenty-first century. Allen Lane.
Cita Chicago (17th ed.)Patten, Chris. What Next?: Surviving the Twenty-first Century. London: Allen Lane, 2008.
Cita MLA (8th ed.)Patten, Chris. What Next?: Surviving the Twenty-first Century. Allen Lane, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.