Artur Kejza

This biography of a living person needs additional citations for verification. Please help by adding reliable sources. Contentious material about living persons that is unsourced or poorly sourced must be removed immediately from the article and its talk page, especially if potentially libelous.
Find sources: "Artur Kejza" – news · newspapers · books · scholar · JSTOR (April 2021) (Learn how and when to remove this message)

You can help expand this article with text translated from the corresponding article in Polish. (July 2021) 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 Polish Wikipedia article at [[:pl:Artur Kejza]]; see its history for attribution.
You may also add the template {{Translated|pl|Artur Kejza}} to the talk page.
For more guidance, see Wikipedia:Translation.