APA (7th ed.) Citation

Bark, W. C. (1960). Origins of the medieval world. Doubleday & Company.

Chicago Style (17th ed.) Citation

Bark, William Carroll. Origins of the Medieval World. New York: Doubleday & Company, 1960.

MLA (9th ed.) Citation

Bark, William Carroll. Origins of the Medieval World. Doubleday & Company, 1960.

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