How do I find peer reviewed sources for an annotated bibliography?

The best way to get started is to go to the library homepage and use the search engine with tab set to "All". Type in your search terms and, when you get your results, click on the "Scholarly and Peer-Review" or "Peer-Review" filter in the left column; scholarly includes book and book chapters and not just articles. This will limit your results to just those types of sources.