User talk:2A02:A456:5A7D:1:45B1:385C:4D3C:328D

Recent edit to Golubac Fortress
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Golubac Fortress, 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) 10:08, 17 September 2018 (UTC)