Delta Publishing by Klett

Build Up to IELTS - Score band 5.0 - 6.0: A step-by-step course. Writing - Listening - Speaking - Reading 5.5-6.0. Student's Book with digital extras

By Lewis Richards

A Handbook of Spoken Grammar: Strategies for Speaking Natural English. Book with Audio CD

By Caroline Caygill, Ken Paterson, Rebecca Sewell