Amazon Images & Adsense

Need your guy's opinions on this one.

I'm using Amazon Associates on a niche site for the first time. I've only made Adsense sites before.

You need to add image credits to stay clear of Adsense penalties which I also do, but what about Amazon images? I know Amazon encourages you to use them when selling their products, but will Google get this during a manual review? Do I just add Amazon's home URL for the image credit?

Thanks!

I would link to the product with your ref id, with "amazon" in anchor so it will look like this:

Source: "Amazon"
and when clicking gets directed to image for said product, with your id of course

can you do "Source: facebook" be enough? (not a clickable link) or do you need to backlink directly to the image?