1. Go to Audible.com2. Log into your Audible account using your Amazon credentials3. Click the Listener Page link at the top.
On the resulting page, select the entire URL in your browser bar. This is your review profile link. Ctrl+c to copy it on a PC or Cmd+C on a Mac. Save it in a note pad document or somewhere safe.
In the form for the book you are requesting, paste the link to your review profile. Ctrl+V to paste on a PC or Cmd+V on a Mac.
This is what it should look like. Fill out the rest of the form and you're done!