"Verdades sobre Gernika" [Truths about Gernika]. Deia (in Spanish). 27 April 2011. Archived from the original on 23 July 2012. Retrieved 17 September 2013.
Vidal Manzanares, César (1997). "9: GUERNICA, DEMOLISHED". La destrucción de Guernica: un balance sesenta años después [The destruction of Guernica: a balance sheet sixty years later]. Translated by Miller, Peter. Espasa. ISBN9788423977468.
"Verdades sobre Gernika" [Truths about Gernika]. Deia (in Spanish). 27 April 2011. Archived from the original on 23 July 2012. Retrieved 17 September 2013.
derwesten.de
Becker, Thomas (1 June 2013). "Willkommen im Club der Millionäre" [Welcome to the millionaires club]. Der Westen (in German). Archived from the original on 26 September 2023. Retrieved 3 April 2024.
Steer, George (18 February 2020). "THE TRAGEDY OF GUERNICA". HistoryNet. Retrieved 5 April 2024. In 2006 the town of Guernica honored Steer by unveiling a bronze bust of him and naming a street in his memory.
"El bombardeo de Gernika" [The bombing of Gernika]. Centro Documental de la Memoria Histórica (in Spanish). Ministerio de Educación, Cultura y Deporte. Archived from the original on 23 May 2017. Retrieved 29 April 2017.
Brey, Gérard. "La destrucción de Guernica" [The destruction of Guernica]. Sociedad Benéfica de Historiadores Aficionados y Creadores (in Spanish). Archived from the original on 7 September 2006. Retrieved 14 September 2006.
Becker, Thomas (1 June 2013). "Willkommen im Club der Millionäre" [Welcome to the millionaires club]. Der Westen (in German). Archived from the original on 26 September 2023. Retrieved 3 April 2024.
Brey, Gérard. "La destrucción de Guernica" [The destruction of Guernica]. Sociedad Benéfica de Historiadores Aficionados y Creadores (in Spanish). Archived from the original on 7 September 2006. Retrieved 14 September 2006.
"El bombardeo de Gernika" [The bombing of Gernika]. Centro Documental de la Memoria Histórica (in Spanish). Ministerio de Educación, Cultura y Deporte. Archived from the original on 23 May 2017. Retrieved 29 April 2017.