Advanced Grammar in Use Book with Answers and Interactive eBook: A Self-study Reference and Practice Book for Advanced Learners of English
The Business of War: Military Enterprise and Military Revolution in Early Modern Europe David Parrott
Grammar in Use Intermediate Student's Book with Answers and Interactive eBook: Self-study Reference and Practice for Students of American English Raymond Murphy
Advanced Grammar in Use with Answers: A Self-Study Reference and Practice Book for Advanced Learners of English Martin Hewings
Essential Grammar in Use with Answers: A Self-Study Reference and Practice Book for Elementary Learners of English Raymond Murphy