Castañeda, Eduardo (27 Mar 1983). "El Athletic, sin problemas" [Athletic, no problems]. Mundo Deportivo (بالإسبانية). Archived from the original on 2020-11-24. Retrieved 2015-10-12.
Castañeda, Eduardo (27 Mar 1983). "El Athletic, sin problemas" [Athletic, no problems]. Mundo Deportivo (بالإسبانية). Archived from the original on 2020-11-24. Retrieved 2015-10-12.