User talk:Dan7210

May 2023
Hello, I'm Actualcpscm. I noticed that you added or changed content in an article, Model rocket motor classification, 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. ''In this case, the given source was self-published. Self-published sources are only appropriate in very limited circumstances, see WP:SPS.'' Actualcpscm (talk) 16:00, 31 May 2023 (UTC)