UQ Library Search has an option to limit your results to peer reviewed journals.
Be aware that not all articles in peer reviewed journals are refereed or peer reviewed, for example, editorials and book reviews.
A peer reviewed article will:
Many databases allow you to limit your search to peer reviewed articles.
Check for an option to do this when you search the database. For example:
Check a database's help or about pages to see if it includes peer review information.
Some databases include only peer reviewed journal articles. For example: