APA (7th ed.) Zitazioa

Combs, C. C. (1997). Terrorism in the twenty-first century. Prentice Hall.

Chicago Style (17th ed.) Zitazioa

Combs, Cindy C. Terrorism in the Twenty-first Century. Upper Saddle River, N.J: Prentice Hall, 1997.

MLA (9th ed.) Zitazioa

Combs, Cindy C. Terrorism in the Twenty-first Century. Prentice Hall, 1997.