"COMUNICADO" [Communication] (PDF) (in Portuguese). FC Porto. 16 August 2011. Archived from the original(PDF) on 24 December 2011. Retrieved 18 August 2011.
fff.fr
"Angleterre et Belgique" (in French). French Football Federation. 28 October 2009. Retrieved 28 December 2010.
"COMUNICADO" [Communication] (PDF) (in Portuguese). FC Porto. 16 August 2011. Archived from the original(PDF) on 24 December 2011. Retrieved 18 August 2011.