APA

Lichtheim George, . (1969). The origins of socialism. New York: Frederick A. Praeger Publishers.

Chicago

Lichtheim George, . 1969. The origins of socialism. New York: Frederick A. Praeger Publishers.

Harvard

Lichtheim George, . (1969). The origins of socialism. New York: Frederick A. Praeger Publishers.

MLA

Lichtheim George, . The origins of socialism. New York: Frederick A. Praeger Publishers. 1969.