Pictures taken with my iPhone of a book cover from a bookstore illegal to use on my website?

Pictures taken with my iPhone of a book cover from a bookstore illegal to use on my website?

Added (1). I took pictures with iPhone5s of book covers at the book store, nothing else, just the cover that has the title on it, I want to add these pictures to my website and share them as my favorite books. Is this a form of illegal copyright laws or something like that? Because I used my own camera and I'm not selling anything.

Link to the book on amazon and use their picture for the link -- it will be better than the picture you took.

It is not illegal, the picture is a common thing. You can check this for picture http://www.123coimbatore.com/Photo/Photographer/page/1