Answer: Write the citation like how you always do, but just don't put an author down and don't write anything like "Author Unknown". Another easy way to do it is use the website 'Easybib'. All you have to do is enter in the URL and Easybib will do the rest. It is okay to have certain points in your citation to be missing. The main point of citing a website/news article is that the correct website/news article gets the credit.
I hope this helped you! :)