User talk:Megra

Hello, I'm Materialscientist. I noticed that you made a change to an article, 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. Thank you. Materialscientist (talk) 04:57, 1 April 2017 (UTC)

August 2023
Please do not add or change content, as you did at Left- and right-hand traffic, without citing a reliable source. Please review the guidelines at Citing sources and take this opportunity to add references to the article. Thank you. Lard Almighty (talk) 11:15, 10 August 2023 (UTC)