APA (7th ed.) Citation

Combs. (2018). Terrorism in the Twenty-First century (8th ed.). Routledge.

Chicago Style (17th ed.) Citation

Combs. Terrorism in the Twenty-First Century. 8th ed. New York: Routledge, 2018.

MLA (8th ed.) Citation

Combs. Terrorism in the Twenty-First Century. 8th ed. Routledge, 2018.