APA (7th ed.) Citation

Thompson, J. M. (2009). The medieval world: An illustrated atlas. National Geographic.

Chicago Style (17th ed.) Citation

Thompson, John M. The Medieval World: An Illustrated Atlas. Washington, DC: National Geographic, 2009.

MLA (9th ed.) Citation

Thompson, John M. The Medieval World: An Illustrated Atlas. National Geographic, 2009.

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