Sieber, U. (2007). International cooperation against terrorist use of the internet.
Cita Chicago (17th ed.)Sieber, Ulrich. International Cooperation Against Terrorist Use of the Internet. 2007.
Cita MLA (8th ed.)Sieber, Ulrich. International Cooperation Against Terrorist Use of the Internet. 2007.
Atenció: Aquestes cites poden no estar 100% correctes.