How to increase your vocabulary and boost your IELTS Speaking score
IELTS SPEAKING (& vocabulary) | ieltswithmelinda
Idioms for IELT Speaking: Master IELTS Vocabulary to Get a Higher Band Score (IELTS Vocabulary Builder) : Jackie Bolen, Olivier Charlas, Jackie Bolen: Amazon.fr: Livres et œuvres originales Audible
IELTS Speaking: Improve your vocab with entertainment - IELTS blog