JSTOR is so neat. They just put it right out there for you. Look to the right at that nifty little box. To make it easy for yourself click "View Citation."
Oh hey, citation. Inside the little box that pops up is the "Article Stable URL." Stable as in, it doesn't change! Yes! You found the permalink! Don't forget to put the proxy before it. Click the above tab Link to a Journal from Off-Campus to find out how.