Since it looks as if you are a college junior, you should go to the college library and ask the librarian for help in tracking down a suitable article. Librariarns are great people and love to help patrons. The librarian can not only help you find a good article but can also help you find information about citing it correctly.
The hard part, of course, will be doing the actual summary, especially if you have no experience in doing such work. Again, my best advice is to seek help at the learning center on your campus. There you will find experienced tutors who will take a genuine interest in helping you. When you are in college, never be reluctant to seek the help that is available, and try as often as possible to get personal help from another human being rather than merely relying on the internet.
Nevertheless, here are some sites that may be helpful: