This article has multiple issues. Please help improve it or discuss these issues on the talk page. (Learn how and when to remove these template messages) .mw-parser-output .hidden-begin{box-sizing:border-box;width:100%;padding:5px;border:none;font-size:95%}.mw-parser-output .hidden-title{font-weight:bold;line-height:1.6;text-align:left}.mw-parser-output .hidden-content{text-align:left}@media all and (max-width:500px){.mw-parser-output .hidden-begin{width:auto!important;clear:none!important;float:none!important))You can help expand this article with text translated from the corresponding article in Basque. (April 2014) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Basque Wikipedia article at [[:eu:Luis Arana Goiri]]; see its history for attribution. You should also add the template ((Translated|eu|Luis Arana Goiri)) to the talk page. For more guidance, see Wikipedia:Translation. This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed.Find sources: "Luis Arana" – news · newspapers · books · scholar · JSTOR (November 2009) (Learn how and when to remove this template message) (Learn how and when to remove this template message)