Cita APA (7th ed.)
Kennan, G. F. The Cloud of Danger. Little, Brown and Company.
Cita Chicago (17th ed.)
Kennan, George F. The Cloud of Danger. Boston, EUA: Little, Brown and Company.
Cita MLA (9th ed.)
Kennan, George F. The Cloud of Danger. Little, Brown and Company.
Atenció: Aquestes cites poden no estar 100% correctes.