If you know the title of the journal whose feed you are seeking, use the alphabetical links at the top of the page to navigate to the title of the journal that interests you
If you would prefer to browse by subject, use the links under Browse Journals along the left sidebar to look at different subject groupings of journals.
When you have found a journal from which you would like to receive RSS updates, click on its title.
In the right sidebar, under Options, there are two different RSS feeds available for any given journal
Latest Issue Feeds
Table of Contents Feeds -- if you are not certain, then subscribe to this feed
Click on the link of the feed to which you wish to subscribe
Copy the URL of the feed out of the navigation bar