Viñarás de Blas, Vidal (1 February 2017). "Hermanos de Primera" [Top-class brothers] (in Spanish). Cuadernos de Fútbol. Archived from the original on 29 March 2023. Retrieved 28 February 2021.
Mentruit, Imma (16 August 1992). "Jon Bakero, el cuarto de la saga" [Jon Bakero, fourth in saga]. Mundo Deportivo (in Spanish). Retrieved 28 February 2021.
Muntané, Eduard (17 January 1993). "Sólo Bakero rompe el cerrojo" [Bakero the only one to break the lock]. Mundo Deportivo (in Spanish). Retrieved 28 February 2021.
Domènech, Joan (6 September 1995). "José Mari Bakero visitó a su hermano Jon" [José Mari Bakero visited his brother Jon]. Mundo Deportivo (in Spanish). Retrieved 28 February 2021.
Viñarás de Blas, Vidal (1 February 2017). "Hermanos de Primera" [Top-class brothers] (in Spanish). Cuadernos de Fútbol. Archived from the original on 29 March 2023. Retrieved 28 February 2021.