In academic publishing, articles are submitted for peer review before being published. Reviewers who are anonymous and who specialize in the same scholarly area as the author (i.e. peers) read articles for quality of research. Reviewers may make suggestions for revision or reject the work.
Authors of scholarly, peer-reviewed articles are experts in their field. Look for author affiliation. Authors of scholarly articles use technical language expecting that their readers are also scholars in the field of study.
Start with some keywords in one of the library databases
Look over the results for additional terms that might be useful
Look for “Limit to” checkbox for Scholarly (Peer Reviewed) Journals
Look for an icon for Academic Journal used in some databases