APA (7th ed.) Citation

Combs, C. C., & Slann, M. W. (2002). Encyclopedia of terrorism. Facts On File.

Chicago Style (17th ed.) Citation

Combs, Cynthia C., and Martin W. Slann. Encyclopedia of Terrorism. New York, NY: Facts On File, 2002.

MLA (9th ed.) Citation

Combs, Cynthia C., and Martin W. Slann. Encyclopedia of Terrorism. Facts On File, 2002.