APA (7th ed.) Citation

Barbero, A., & Cullen, J. (2007). The day of the barbarians: The battle that led to the fall of the Roman Empire (1st U.S. ed.). Walker & Co..

Chicago Style (17th ed.) Citation

Barbero, Alessandro, and John Cullen. The Day of the Barbarians: The Battle That Led to the Fall of the Roman Empire. 1st U.S. ed. New York: Walker & Co., 2007.

MLA (9th ed.) Citation

Barbero, Alessandro, and John Cullen. The Day of the Barbarians: The Battle That Led to the Fall of the Roman Empire. 1st U.S. ed. Walker & Co., 2007.