"O'Higgins se impuso en el clásico" [O'Higgins imposed itself in the classic]. O'Higgins FC. 11 July 2011. Archived from the original on 29 August 2021. Retrieved 29 August 2021.
"O'Higgins se impuso en el clásico" [O'Higgins imposed itself in the classic]. O'Higgins FC. 11 July 2011. Archived from the original on 29 August 2021. Retrieved 29 August 2021.