Clicking the star will lead to a popup window containing the permanent link to this article.
Use your mouse to highlight the entire link and then hold down the CTRL and C keys together to copy this link.
If you find that your PURL is not working, check to see if it has a pipe character (|) in it. If this is the case, try replacing all instances of the pipe with %7c.
DO NOT TRY this replacement unless the URL with the pipe (|) in it does not work.