APA (7th ed.) Citation

Levene, M., & Roberts, P. (1999). The massacre in history. Berghahn.

Chicago Style (17th ed.) Citation

Levene, Mark, and Penny Roberts. The Massacre in History. New York [etc.]: Berghahn, 1999.

MLA (9th ed.) Citation

Levene, Mark, and Penny Roberts. The Massacre in History. Berghahn, 1999.