User talk:213.226.141.118

January 2019
Hello, I'm Doniago. I noticed that you added or changed content in an article, List of fictional elements, materials, isotopes and subatomic particles, but you didn't provide a reliable source. It's been removed and archived in the page history for now, but if you'd like to include a citation and re-add it, please do so. If you need guidance on referencing, please see the referencing for beginners tutorial, or if you think I made a mistake, you can leave me a message on my talk page. Please note that Wikipedia is not a reliable source per WP:CIRCULAR. DonIago (talk) 17:50, 16 January 2019 (UTC)
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