This document provides publishing information for an upper intermediate English workbook without key. It was published in 2013 by Cambridge University Press and contains lessons and portfolios covering a range of grammar, vocabulary, reading and writing topics to help learners at an upper intermediate level improve their English language ability. It was written by Nicholas Tims, Jan Bell, Chris Redston and Gillie Cunningham. The document lists ISBN numbers and acknowledges sources of copyright material used within the book.