User talk:AlexanderRomanov336

December 2015
Hello, I'm C.Fred. I noticed that you made a change to an article, Addiction, 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. —C.Fred (talk) 03:09, 13 December 2015 (UTC)

Recent edits to Environmental engineering
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Environmental engineering, 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! Qzd (talk) 04:05, 13 December 2015 (UTC)