"Alta Iker Guarrotxena" [Signing Iker Guarrotxena] (in Spanish). Cultural Leonesa. 18 July 2017. Archived from the original on 22 July 2017. Retrieved 18 July 2017.
elcorreo.com
"Qué fue de..." [What happened to...]. El Correo (in Spanish). 13 May 2009. Archived from the original on 16 July 2018. Retrieved 16 July 2018.
"Guarrotxena piłkarzem Pogoni!" [Guarrotxena football player Pogoń!] (in Polish). Pogoń Szczecin. 4 August 2018. Archived from the original on 14 March 2020. Retrieved 7 August 2018.
"Alta Iker Guarrotxena" [Signing Iker Guarrotxena] (in Spanish). Cultural Leonesa. 18 July 2017. Archived from the original on 22 July 2017. Retrieved 18 July 2017.
"Guarrotxena piłkarzem Pogoni!" [Guarrotxena football player Pogoń!] (in Polish). Pogoń Szczecin. 4 August 2018. Archived from the original on 14 March 2020. Retrieved 7 August 2018.