APA (7th ed.) Citation

Kelly, K. (2009). The Middle Ages: 500-1450. Facts on File.

Chicago Style (17th ed.) Citation

Kelly, Kate. The Middle Ages: 500-1450. New York: Facts on File, 2009.

MLA (9th ed.) Citation

Kelly, Kate. The Middle Ages: 500-1450. Facts on File, 2009.

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