Lichtheim, G. (1969). The origins of Socialism. London: Weidenfeld and Nicolson.
Cita Chicago (17th ed.)Lichtheim, George. The Origins of Socialism. London: Weidenfeld and Nicolson, 1969.
Cita MLA (8th ed.)Lichtheim, George. The Origins of Socialism. London: Weidenfeld and Nicolson, 1969.
Atenció: Aquestes cites poden no estar 100% correctes.