Quick Question - I Need Help Please!

So, I have a really quick question that I can't figure out on my own but I it can be done because I've seen it on some of the other fantastic blogs that I visit! I know how to put a link under a word so that you can click back or refer back to a page BUT (and here's my question) how do you put a link under a picture or photo so that you can click back to page other than my own?  Say I had a cover of a book up and I wanted to reference it back to either it's page on Goodreads, the Author's Site, or The Publisher's Page? How would I do that? 

If you've done this before, or if you simply know how to do it and feel comfortable leaving the answer in the comments, you can do that or just hit the "Contact Me" button up top and I'll get your message directly and forever be in your royal debt! *smile*  Thank You SO Much!

I've been up reading some really adorable books lately and have some reviews along with some fantastic contests coming up! Don't forget, it's almost time to give away the Brand New B&N NOOK! I'd like to get to 1,000 GFC Followers before giving it away, but the acutal post may be going up before that point! While you're here don't forget to enter to win you're J*FLOPS! and tonight is the last night to enter your Autographed copy of  "The Space Between Trees" by Katie Williams!



KISSES & TOODLES!!