Grammar for IELTS Writing by David S. Wills
Grammar for IELTS Writing is intended as a handbook. That means it is for reference purposes. It is not a textbook, so there are no exercises to do. It contains essential information about the most important parts of 
English concerning IELTS candidates, and is structured from basic to advanced. If you read the whole of this book and apply its lessons to your writing, you will be on course for a high band score in the IELTS writing exam. 2018.
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Grammar for IELTS Writing by David S. Wills – About the Author:
David S. Wills is an IELTS tutor from the United Kingdom. In this book, He aims to give an overview of important English language grammar to help you get through the IELTS writing exam. This is by no means an exhaustive text – for that you’d need a book with more than a thousand pages! However, I think it is a good basic guide to the most important grammar points needed for IELTS.
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