You should evaluate resources before you reference them. When you evaluate a resource, you can decide how trustworthy the information is. Evaluation isn't usually a yes-or-no, clear-cut situation. You may find that the resource has some minor quality or content issues, but it would still be valuable for your work. Please consult your professor about quality concerns you have with items you have found.
The same journal can publish different types of articles. These article types might not all go through peer review (be refereed).
Not all publishers label their article types! Be on the lookout to check what type of article you have accessed!
Look at different article types with me in this Article Types Video.
Books can be scholarly works. Books may have: an expert author, a scholarly publisher, and proof that the book is built on research. They may or may not have book reviews, but book reviews can be helpful to understand the book's contents and quality.
Always review websites for appropriateness. If the website fails any of these criteria, it doesn't automatically make the website a "bad source," but the site should be critically viewed before using it for an assignment.
Finally, ask yourself these questions: