Llamas, Fernando (16 October 2002). "Paraguay anula a España en Logroño" [Paraguay cancel Spain in Logroño] (in Spanish). El Mundo. Retrieved 2 June 2021.
Mateus, Luís (20 August 2011). "Benfica-Feirense, 3–1 (crónica)" [Benfica-Feirense, 3–1 (match report)] (in Portuguese). Mais Futebol. Retrieved 2 April 2019.