APA (7th ed.) Citation

Smith, G. D., & Smith, G. D. (1990). Combating terrorism. Routledge.

Chicago Style (17th ed.) Citation

Smith, G. Davidson, and Gareth Dylan Smith. Combating Terrorism. London [u.a.]: Routledge, 1990.

MLA (8th ed.) Citation

Smith, G. Davidson, and Gareth Dylan Smith. Combating Terrorism. Routledge, 1990.

Warning: These citations may not always be 100% accurate.