Create a bibliography for your chosen topic by compiling a list of good sources on the bibliography page in your sandbox. To find your bibliography sandbox page go to the My Articles section, and click on the Bibliography link underneath the article you are working on.

Make sure to check in on the Talk page to see if anyone has discussed relevant sources. Adding the article to your Watchlist by clicking the star next to "View history" will help you keep track. If you've added your email to your account (which is a really good idea), you'll get notifications if something on the page changes.