Two Options
If you are using a manager, take a look at the first option on this page.
Those without a manager should skip down to the second option.
Option 1: Adding citations to a manager
When in the screen with information on the article or resource or the screen that lets you read the read the PDF or HTML, look for an export option.
It could look like this:
OR 
OR 
Be prepared to see many different versions of export options and icons.
After clicking an export option you should see either a list of managers, a list of file types, or a bit of both:
If you see only a list of managers, the one you use may not be on the list! Test the option available, as one of the them may still be a file type readable by your manager.
The citation you get are not always accurate.
Option 2: Generating citations without a manager
If you are not using a manager, look for a cite option.
It could look like this:
OR 
It may look different, and not all databases will have a cite feature.
The generated citation may not be 100% accurate! It will look like this:
Scroll through to find your needed citation sytle, or look for a drop-down menu and select the one you want. A dropdown would look like this:
Sometimes you may need to click a button like "Change" in the example above after selecting your citation style.
Make sure it is the current edition!
Note to Chicago and Turabian users: these styles have multiple versions, make sure you are selecting the right one. Some databases list the Notes-Bibliography version as "Humanities."