Archivado el 31 de julio de 2010 en Wayback Machine.U2.com. Live Nation. Archived from the original on 30 September 2011. Retrieved 30 September 2011.
Archivado el 31 de octubre de 2012 en Wayback Machine.U2.com. Live Nation. 24 June 2011. Archived from the original on 30 September 2011. Retrieved 30 September 2011.
Archivado el 11 de mayo de 2014 en Wayback Machine.U2.com. Live Nation. 22 January 2012. Archived from the original on 12 February 2012. Retrieved 12 February 2012.
Archivado el 31 de julio de 2010 en Wayback Machine.U2.com. Live Nation. Archived from the original on 30 September 2011. Retrieved 30 September 2011.
Archivado el 31 de octubre de 2012 en Wayback Machine.U2.com. Live Nation. 24 June 2011. Archived from the original on 30 September 2011. Retrieved 30 September 2011.
Archivado el 11 de mayo de 2014 en Wayback Machine.U2.com. Live Nation. 22 January 2012. Archived from the original on 12 February 2012. Retrieved 12 February 2012.