APA (7th ed.) Citation

Keen, M. H. (1967). A history of Medieval Europe. Routledge & Paul.

Chicago Style (17th ed.) Citation

Keen, Maurice Hugh. A History of Medieval Europe. London: Routledge & Paul, 1967.

MLA (9th ed.) Citation

Keen, Maurice Hugh. A History of Medieval Europe. Routledge & Paul, 1967.

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