APA (7th ed.) Citation

Levine, R. (1991). A thirteenth century life of Charlemagne. Garland Pub..

Chicago Style (17th ed.) Citation

Levine, Robert. A Thirteenth Century Life of Charlemagne. New York: Garland Pub., 1991.

MLA (9th ed.) Citation

Levine, Robert. A Thirteenth Century Life of Charlemagne. Garland Pub., 1991.

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