How to find all the elements you need for a citation from a Wikimedia page:
Title of Image and link to source
- Text: Use the title of the image (if available) otherwise use the description
- Link: Use the URL of the wikimedia page for the link OR right-click on the link for the Source and copy the link address if the image is originally from elsewhere
Creator and link to profile
- Text: Name (or username) in author field
- Link: Right click on linked author name and copy link address
License information
- Text: Click on the part of the license that begins with "Attribution..." and open the license page. Copy the text of the shortened version (e.g. CC BY-SA)
- Link: URL from License page
Link to Wikimedia Commons page for screencapture above