To find out if a journal/trade publication/magazine is academic and peer-reviewed, search the title in Ulrich's.
Key PR/Communication Academic Journals
Key PR/Communication Trade Journals
A general search for journal articles is best done in the Page 1+ search box on the Library home page.
If you are getting too many, or not enough on topic, results, try one of the smaller databases listed below:
Or you could go BIGGER and search Google Scholar linked to Humber resources