APA Citation

Ullmann, W. (1961). Principles of government and politics in the Middle Ages. London: Methuen.

Chicago Style Citation

Ullmann, Walter. Principles of Government and Politics in the Middle Ages. London: Methuen, 1961.

MLA Citation

Ullmann, Walter. Principles of Government and Politics in the Middle Ages. London: Methuen, 1961.

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