There are actually a lot of books out there about ants, starting from books for young children all the way up to books for the serious enthusiast/scientific researcher.
I currently have 17 books on ants which I have purchased over the past 15 years. Some are on the subject of Myrmecology (the scientific study of ants) as a whole, others specialise in various species.
Below is a list of the books I have with a link that will take you to a page on Amazon UK where you can find more information. Should you live in a country outside of the UK that has its own Amazon website, such as Amazon USA, you should easily be able to find it on your respective site variation.
A few are out of print and difficult to get hold of nowadays but you can still get them, though they are expensive.
Some of these books are available on Kindle too.
If you have any questions about these books then please feel free to email me by clicking on the Contact Myrm tab on the left of your screen.