APA (7th ed.) Citation

Haskins, C. H. (1955). The renaissance of the twelfth century. Harvard University Press.

Chicago Style (17th ed.) Citation

Haskins, Charles Homer. The Renaissance of the Twelfth Century. Cambridge: Harvard University Press, 1955.

MLA (9th ed.) Citation

Haskins, Charles Homer. The Renaissance of the Twelfth Century. Harvard University Press, 1955.