Ways To Source;
Use one or more of these methods.
- Setting the Source Link to go to the Photographer/Photo page
- Setting the Click-Through Link to go to the Photographer/Photo page
- Putting a Link to the Photographer/Photo page in the Text portion of the post.
You can still have one going back to your blog, as long as you have one for the photographer/photo page.
Note: People very often erase the text portion, so I would highly suggest using one of the first two.