Cita APA (7a ed.)

Ullmann, W. (1975). Law and politics in the Middle Ages: An introduction to the sources of medieval political ideas. Cambridge University Press.

Cita Chicago Style (17a ed.)

Ullmann, Walter. Law and Politics in the Middle Ages: An Introduction to the Sources of Medieval Political Ideas. Cambridge, Mass.: Cambridge University Press, 1975.

Cita MLA (9a ed.)

Ullmann, Walter. Law and Politics in the Middle Ages: An Introduction to the Sources of Medieval Political Ideas. Cambridge University Press, 1975.