APA (7th ed.) Citation

Bjork, R. E. (2010). The Oxford dictionary of the Middle Ages. Oxford University Press.

Chicago Style (17th ed.) Citation

Bjork, Robert E. The Oxford Dictionary of the Middle Ages. Oxford: Oxford University Press, 2010.

MLA (9th ed.) Citation

Bjork, Robert E. The Oxford Dictionary of the Middle Ages. Oxford University Press, 2010.