Finding Scholarly articles

Several Databases (such as Academic Search Complete) give you the option to limit to scholarly/peer reviewed journals:

However, to be completely sure that you are using an article from a peer-reviewed journal, you should still check in the database Ulrichsweb.

Checking in Ulrichsweb

Go to the link to Find Articles & Databases

Now select "U" in the alphabetical list of databases - then scroll down and select Ulrichsweb.com:  

Now type in the title of the JOURNAL (not the article title) and select SEARCH:

If the refereed icon is next to your journal title, you can be sure that the journal is a scholarly/peer-reviewed/refereed title.