User talk:2A00:23C3:4880:8301:E0A9:4250:178B:AA29

December 2021
Hello, I'm Train of Knowledge. I noticed that you added or changed content in an article, Public address system, 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. Thank you. Train of Knowledge (Talk) 22:27, 7 December 2021 (UTC)