User talk:47.142.183.69

Recent edit to Heterocyclic amine
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Heterocyclic amine, 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!  — Ruyter (talk • edits)  13:39, 8 June 2019 (UTC)