Another famous book for IELTS preparation from Cambridge University Press. This book is known as the best Grammar book for IELTS. It contains all the grammar you need for IELTS with extensive practice and clear explanations.
Cambridge Grammar for IELTS provides complete coverage of the grammar needed for the IELTS test, and develops listening skills at the same time. It includes a wide range of IELTS tasks from the Academic and General Training Reading, Writing and Listening modules, and contains helpful grammar explanations and a grammar glossary.
You should download the book to have a look first before downloading the Audio.