APA (7th ed.) Citation

Lichtheim, G. (1972). Europe in the twentieth century. Praeger Publishers.

Chicago Style (17th ed.) Citation

Lichtheim, George. Europe in the Twentieth Century. New York: Praeger Publishers, 1972.

MLA (9th ed.) Citation

Lichtheim, George. Europe in the Twentieth Century. Praeger Publishers, 1972.