User talk:Alfredwuhk

Recent edit to Cloud computing
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Cloud computing, 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! JustBerry (talk) 21:59, 17 October 2015 (UTC)