User talk:2601:445:447F:1370:61AC:29C7:612C:CBC1

Recent edit to Circular economy
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Circular economy, but you didn't provide a reliable source. It's been removed 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) 15:05, 22 February 2020 (UTC)