APA (7th ed.) Citation

Klauck, H., Mitchell, M. M., & Young, F. M. (2006). The Roman empire.

Chicago Style (17th ed.) Citation

Klauck, Hans-Josef, Margaret Mary Mitchell, and Frances M. Young. The Roman Empire. 2006.

MLA (8th ed.) Citation

Klauck, Hans-Josef, et al. The Roman Empire. 2006.