"Comunicado" [Announcement] (PDF) (in Portuguese). Portuguese Securities Market Commission. 15 January 2014. Archived(PDF) from the original on 9 July 2014. Retrieved 31 December 2014.
Marshall, Adam (31 July 2017). "The lowdown on Nemanja Matic". Manchester United. Archived from the original on 29 October 2017. Retrieved 29 October 2017.
Assunção, Manuel (14 April 2012). "Crónica de jogo: A lei do Benfica" [Match report: The law of Benfica]. Público (in Portuguese). Lisbon. Archived from the original on 6 July 2020. Retrieved 6 July 2020.
Marshall, Adam (31 July 2017). "The lowdown on Nemanja Matic". Manchester United. Archived from the original on 29 October 2017. Retrieved 29 October 2017.
"Comunicado" [Announcement] (PDF) (in Portuguese). Portuguese Securities Market Commission. 15 January 2014. Archived(PDF) from the original on 9 July 2014. Retrieved 31 December 2014.
McNulty, Phil (15 May 2010). "Chelsea 1–0 Portsmouth". BBC Sport. Archived from the original on 16 May 2010. Retrieved 18 May 2019.
Assunção, Manuel (14 April 2012). "Crónica de jogo: A lei do Benfica" [Match report: The law of Benfica]. Público (in Portuguese). Lisbon. Archived from the original on 6 July 2020. Retrieved 6 July 2020.