Fluent English

Montserrat Publishing

Fluent Everyday English: Book 4 in the Everyday English Advanced Vocabulary series

Harmony

Fluent Forever (Revised Edition): How to Learn Any Language Fast and Never Forget It (English Edition)

Fluent English: C1 Level (English Edition)      

Fluent English: B2 Level: Grammar, Vocabulary and Reading Practice (English Edition)

Fluent English: B1 Level: Grammar, Vocabulary & Reading for Intermediate Learners (English Edition)

The Black Book of Speaking Fluent English: The Quickest Way to Improve Your Spoken English (English Edition)

CreateSpace Independent Publishing Platform

Speak fluent English                            

Collins

Fluent in 3 Months [Lingua Inglese]              

Premier English Learning Publishing

Fluent English Vocabulary 2022 Complete Edition: Important Words, Phrasal Verbs, and Idioms You Should Know to Write and Speak English Fluently (The Most ... English Dictionaries) (English Edition)

Cambridge University Press

English Collocations in Use Advanced Book with Answers: How Words Work Together for Fluent and Natural English [Lingua inglese]