Cita APA

Ullmann, W. (1965). A history of political thought: The middle ages. Penguin.

Citación estilo Chicago

Ullmann, Walter. A History of Political Thought: The Middle Ages. Harmondsworth: Penguin, 1965.

Cita MLA

Ullmann, Walter. A History of Political Thought: The Middle Ages. Penguin, 1965.

Warning: These citations may not always be 100% accurate.