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 Library Search. You can find the search box at the top of every page on the Library website.
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