Collins Cobuild. Key Words for IELTS. Book 3. Advanced. Collins Cobuild, 2011. — 193 p (PDF).
These vocabulary books are unique in that the vocabulary items are organized alphabetically, in a dictionary style, and words are clearly labelled according to topic.
Hundreds of vocabulary-building features, synonyms, phrases and collocations help students to enrich their vocabulary and increase their accuracy and fluency. Key words from the Academic Word List are also covered.
To help students consolidate what they have learnt, the title also includes a thematic vword list section, organized according to topics that frequently appear in the IELTS exams.