1. Do not use the URL from the address bar! In library databases this is likely a temporarily-generated link and the stability is not guaranteed!
2. Remember that every database is a little different. Look for phrases like Permanent Link, Stable Link, or Permalink in menu bars. It may also be located under sharing options. It might also just be indicated by an icon to click or hidden under a Share menu.
3. The DOI is also acceptable and can have the proxy added to it
4. If possible, use the permalink for the database the article is actually in, not one where just the citation or article linker is the only available information. (For example, permalinks for Summon are only linking to information about the article, not the actual article.)
The following video shows how to find a permalink in the Ebsco databases. This video has no sound.
The following video shows how to find permalinks (or Document URLs as ProQuest calls them) in ProQuest databases. There are multiple ways to do this and this video demonstrates one of them.
This video has no sound.