Scholarly articles are written by experts such as your professors. Furthermore, before an article is published in scholarly journals, the articles goes through a process of peer review, in which other experts in the field review the article for accuracy, authenticity and originality. Articles often discuss research, Scholarly articles are located using article databases that provide descriptions of the articles and in most case, direct full-text access.
See our librayr research tip "Scholarly or popular" at http://www.uvic.ca/library/research/tips/scholvpop/index.php