APA (7th ed.) Citation

Keen, M. (1990). English society in the later middle ages 1348-1500. The Penguin Press.

Chicago Style (17th ed.) Citation

Keen, Maurice. English Society in the Later Middle Ages 1348-1500. London [u.a.]: The Penguin Press, 1990.

MLA (9th ed.) Citation

Keen, Maurice. English Society in the Later Middle Ages 1348-1500. The Penguin Press, 1990.