Go to AMAZON and search for Book you are looking for. I’m sure they’ve all books that you may want to buy. I search for Barron’s IELTS Book and found “Barron's IELTS with Audio CD: International English Language Testing System (Barron's) (Paperback)” written by Lin Loughleed. When I found this book, its price was $13.59.

Here is the direct link to a book page at Amazon.com
http://www.amazon.com/Barrons-IELTS-Audio-CD-International/dp/0764179357/ref=pd_bbs_sr_1?ie=UTF8&s=books&qid=1217771806&sr=8-1

There’s no doubt Amazon is the largest store for Books. So the book or study guides for IELTS that you’re looking for are available at Amazon. I found a book called “Barron’s How to Prepare For the IELTS (International English Language Testing System)”: With Audio Compact Disc” which I guess is the best book to prepare for IELTS Test. You can buy that book here:

http://www.amazon.com/Barrons-IELTS-Audio-CD-International/dp/0764179357

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