Well if you've only got one book on Amazon just provide a direct link to it. Go to the book on amazon and then copy and paste the URL into your web pages link.
<a href='http://www.amazon.com/exec/obidos/ASIN/1552095460/qid=1100261190/sr=2-1/ref=pd_ka_b_2_1/104-5011176-8582352' target='_blank'>Here is my book</a>
If you want to link to a set of books based on search results do the search on amazon and copy and paste the url:
<a href='http://www.amazon.com/exec/obidos/search-handle-form/ref=s_sf_b_as/104-5011176-8582352' target='_blank'>Books by Tolkien</a>
Why don't you also sign up as an amazon affiliate and you'll get a further percentage of every book sale from visitors you refer to Amazon. After all they may purchase a few other books as well as yours in one visit.