Design guidelines for open in new tab – Hyperlink vs Image

I am designing a website which has lots of 3rd party web services dependency. Hence user need to constantly switch to those site for validation - like using Oauth services, which will redirect back to our site.

What would be the better design for such case -

1. Text HyperLink URL - Which state the description and domain name to be redirected.
2. Using the logo of the redirecting site.
3. Any other solution ?

Any similar design example would be helpful.