Unauthenticate Google OAuth connections

I authorized access to my account by an application that turned out to not work. Now I want to remove the authorization in case it was malicious. How could I do this?

From web app MiffTheFox

• 1. Go to your account settings.
  2. Click on Change authorized websites
  3. Revoke the site you wish to remove.
  MiffTheFox : I went to my account settings, but there was no link like that there. Clicking the URL you provided directly says that nothing's authenticated. I guess it must have failed to authenticate too.
  From rchern