There are several ways:
Click on the title of the article and over on the right (or on the top), you will see a toolbar with icons to save the article to your Google Drive, print, email, and save to your computer or flash drive.
Also note that there is a Cite link which will give you the citation for the article. Just click on the "Cite" link, scroll down to your preferred format (APA or MLA, etc.) and then you can select the citation, copy and paste into Word or a Google Doc.
Hope this helps!