User talk:121.55.216.30

December 2019
This is your only warning; if you vandalize Wikipedia again, you may be blocked from editing without further notice. CLCStudent (talk) 13:30, 31 December 2019 (UTC)
 * If this is a shared IP address, and you did not make the edits referred to above, consider creating an account for yourself or logging in with an existing account so that you can avoid further irrelevant notices.

Recent edits to Robert Weilbacher
Hello, and welcome to Wikipedia. I noticed that you made a change to an article, Robert Weilbacher, 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! Materialscientist (talk) 17:07, 16 February 2020 (UTC)