Ferguson, N. (2001). 2011: Sept. 11 ten years from now.
Cita Chicago (17th ed.)Ferguson, Niall. 2011: Sept. 11 Ten Years from Now. 2001.
Cita MLA (9th ed.)Ferguson, Niall. 2011: Sept. 11 Ten Years from Now. 2001.
Atenció: Aquestes cites poden no estar 100% correctes.