APA (7th ed.) Citation

Wells, C. M. (1992). The Roman empire (2nd ed.). Fontana Press.

Chicago Style (17th ed.) Citation

Wells, C. M. The Roman Empire. 2nd ed. London: Fontana Press, 1992.

MLA (8th ed.) Citation

Wells, C. M. The Roman Empire. 2nd ed. Fontana Press, 1992.