"El Barça arrasa y se echa a dormir la siesta" [Barça cleans up and takes a nap]. ABC (in Spanish). 19 March 2018. Retrieved 16 June 2018. A game of old rivalry, so old that neither of the two teams seemed to remember.
Carlos Ruiz (17 April 2021). "Barça - Athletic, una rivalidad al alza" [Barça - Athletic, a rivalry on the rise]. La Vanguardia (in Spanish). Retrieved 5 September 2023.
El Barça vivirá su primer referéndum total (Barça will experience its first total referendum), www.mundodeportivo.com, 2 March 2014 (in Spanish). Retrieved on 20 January 2020
The totals do not include two fixtures played in the Champions Tournament of 1927–28 (Barcelona 3–1 Athletic[135] and Athletic Bilbao 0–1 Barcelona),[136] part of the Liga Española de Football, a predecessor of the Spanish league which was never completed. Athletic Bilbao's archive refers to the matches in the competition as friendlies.[137]