Hamilton, Eric (29 April 2008). "The Fight For Mosul"(PDF). Backgrounders. Institute for the Study of War. pp. 14–15. Archived from the original(PDF) on 29 May 2008. Retrieved 9 May 2008.
Hamilton, Eric (29 April 2008). "The Fight For Mosul"(PDF). Backgrounders. Institute for the Study of War. pp. 14–15. Archived from the original(PDF) on 29 May 2008. Retrieved 9 May 2008.