Try to find a variety of sources (scholarly articles, newspapers, government publications, personal narratives) that represent multiple perspectives. Be open and curious. At this point, you're looking for information that will help you answer your question, not support a pre-determined thesis.
Choosing credible sources is more complicated than simply finding a peer-reviewed article. What is considered a "credible source" depends on the context of the situation, the audience, the academic discipline, and the subject and purpose of the work.
These videos from NCSU Libraries will help you evaluate information and sources critically.
Make an appointment with an MSMU Librarian for help finding credible sources for your assignment!
Try this guide for a few writing tips and resources:
You can find help writing and revising essays in the following locations: