User talk:2600:100A:B106:5178:B8CE:DB5:254C:C5FE

September 2021
Hello, I'm DVdm. I noticed that you added or changed content in an article, Carl Sagan, 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. You can have a look at referencing for beginners. If you think I made a mistake, you can leave me a message on my talk page.   DVdm (talk) 19:58, 15 September 2021 (UTC)