It is important to find credible sources and use those that you can be sure are sufficiently scholarly.
Consult your institute’s library to find out what books, journals, research databases, and other types of sources they provide access to.
Look for books published by respected academic publishing houses and university presses, as these are typically considered trustworthy sources.
Look for journals that use a peer review process. This means that experts in the field assess the quality and credibility of an article before it is published.