The origins of Socialism.

MLA

Lichtheim, George. The Origins of Socialism. London: Weidenfeld and Nicolson, 1969.

APA

Lichtheim, G. (1969). The origins of Socialism. London: Weidenfeld and Nicolson.

Chicago

Lichtheim, George The Origins of Socialism. London: Weidenfeld and Nicolson, 1969.