APA (7th ed.) Citation

La Monte, J. L. (1949). The world of the Middle Ages: A reorientation of medieval history. Appleton-Century-Crofts.

Chicago Style (17th ed.) Citation

La Monte, John L. The World of the Middle Ages: A Reorientation of Medieval History. New York: Appleton-Century-Crofts, 1949.

MLA (8th ed.) Citation

La Monte, John L. The World of the Middle Ages: A Reorientation of Medieval History. Appleton-Century-Crofts, 1949.

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