Locate the article you wish to link to and click on the title.
Scroll down to the bottom of the record and locate the DOI (see image below):
Click image to enlarge.
Highlight, copy and paste this into the DOI box below.
Click "Create Link".
Your complete link will appear in the "Complete Link" box. If you want to test the complete link to make sure it works, click "Test Link", otherwise, copy the link and paste it into your document or webpage.