APA (7th ed.) Citation

Utley, R. E. (2011). 11 September 2001: Perspectives ten years after. Ashgate.

Chicago Style (17th ed.) Citation

Utley, R. E. 11 September 2001: Perspectives Ten Years After. Farnham ; Burlington, VT: Ashgate, 2011.

MLA (9th ed.) Citation

Utley, R. E. 11 September 2001: Perspectives Ten Years After. Ashgate, 2011.

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