APA (7th ed.) Citation

Heather, P. J. (2005). The fall of the Roman Empire. Macmillan.

Chicago Style (17th ed.) Citation

Heather, P. J. The Fall of the Roman Empire. London: Macmillan, 2005.

MLA (9th ed.) Citation

Heather, P. J. The Fall of the Roman Empire. Macmillan, 2005.