Agiriano, Jon (6 January 2010). "Los Colores del Siglo" [The colours of the century]. El Correo (in Spanish). Archived from the original on 4 December 2021. Retrieved 15 October 2018.
"Athletic de Madrid 1910-11". Equipos de Fútbol (Football Teams) (in Spanish). 13 July 2016. Archived from the original on 11 October 2018. Retrieved 10 October 2018.
"Manuel Garnica, the "Saint" who scored a goal with Athletic" [Manuel Garnica, el "Santo" que metió un gol con el Athletic]. Memorias del Fútbol Vasco (Memories of Basque Football) (in Spanish). 30 March 2014. Archived from the original on 4 December 2021. Retrieved 10 October 2018.
Agiriano, Jon (6 January 2010). "Los Colores del Siglo" [The colours of the century]. El Correo (in Spanish). Archived from the original on 4 December 2021. Retrieved 15 October 2018.
"Athletic de Madrid 1910-11". Equipos de Fútbol (Football Teams) (in Spanish). 13 July 2016. Archived from the original on 11 October 2018. Retrieved 10 October 2018.
"Manuel Garnica, the "Saint" who scored a goal with Athletic" [Manuel Garnica, el "Santo" que metió un gol con el Athletic]. Memorias del Fútbol Vasco (Memories of Basque Football) (in Spanish). 30 March 2014. Archived from the original on 4 December 2021. Retrieved 10 October 2018.