If you are not sure how to get started looking for reliable and credible information sources, try Summon.
It's better than Google or Google Scholar. Summon lets you look at almost all of the library's full-text and print resources at once, and has filters so you can narrow down your search quickly to find what you want. Watch this short video to learn how to use Summon.
These databases are a great way to get started on your search.