User talk:Richard Gale

November 2017
Hello, I'm Walter Görlitz. I noticed that you made a change to an article, Systems development life cycle, 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! 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. Walter Görlitz (talk) 07:15, 16 November 2017 (UTC)

The material was copied directly from another website, and thus was a copyright violation. Please don't add copyright material to this wiki. — Diannaa 🍁 (talk) 13:49, 17 November 2017 (UTC)