APA (7th ed.) Citation

Combs, C. C., & Slann, M. W. (2007). Encyclopedia of terrorism (Rev. ed.). Facts On File.

Chicago Style (17th ed.) Citation

Combs, Cindy C., and Martin W. Slann. Encyclopedia of Terrorism. Rev. ed. New York: Facts On File, 2007.

MLA (9th ed.) Citation

Combs, Cindy C., and Martin W. Slann. Encyclopedia of Terrorism. Rev. ed. Facts On File, 2007.