Here are some of the best books that can help you score very well in IELTS!

1. The Official Cambridge Guide to IELTS 

2. Barron’s IELTS  Superpack 

3. Cambridge IELTS 15 Academic Student's Book with Answers.

4. Simone Braverman's Target Band 7

5. Road to IELTS

Click here to know how to prepare for IELTS!