Searches using Google or other search engines can be used to find websites but it is up to you to evaluate the content for its accuracy or value. The sites listed below may be useful to you during your research.
Google results are only as good as your search.
To focus your search connect your search terms with "AND".
To broaden your search connect your search terms with "OR".
To limit your search results to non-commercial sites add "and site:gov OR site:edu OR site:org" to your search.
Be a better Googler: 15 tips and tricks.
Not an academic source, but a good starting point for an overview of a topic. Reliable references may be found at the end of articles.