The best way to create a reusable link via CitationLinker is to find a unique identifier such as an article's DOI (What is a DOI?), if you can't find any unique number of a particular article, fill in as much citation information as you can (see detailed instruction on How do I Use CitationLinker page), then click on the "Go" button. You'll land on the library's Discover page:
At the bottom of the page, you'll see a link named "Record Link". Right click it then choose "Copy link address" from the popup menu (or "Copy link location", or "Copy shortcut", etc. depending on what browser you use), this will be the link that you want to bookmark or link to for later use. It takes you to the same discover page so if a vendor changes its coverage, or the library drops a subscription, or the database server is down temporarily, you'll always have the most up-to-date information.