You will need to be able to summarize primary sources / research articles for your own writing. Before you can summarize, you need to properly read the article yourself. Start by skimming, and look for a few basic things.
Make note of these key points using your own words, as this will be the basis of your summary. If you can't restate the source in your own words, it could mean you don't understand it, and are at a higher risk for accidental plagiarism. With those notes, you can start on a summary. In general, a summary should contain the following:
A summary should be short, ideally a few sentences at most, and contain citations to the primary source / research you are summarizing. When in doubt, look at the source you are citing, and see how they summarize their own citations.