Fluent Forever

CROWN

Fluent Forever: How to Learn Any Language Fast and Never Forget It

Kingscourt

GR - FRIENDS ARE FOREVER (61265) (Literacy Links Plus Guided Readers Fluent)

Pearson Education Limited

I dont want to live forever? Info Trail Fluent Book 15 (LITERACY LAND)

Collins

Fluent in 3 Months (English Edition)            

Independently published

Fluent For Real: Master Any Language Naturally And Never Lose it. The Essential Principles from a Self-Taught Polyglot Who Speaks 8 Languages

Espasa

Inglés fácil: El curso más sencillo y eficaz para aprender inglés a tu propio ritmo (Espasa Idiomas)

Robinson

How to Speak Any Language Fluently: Fun, stimulating and effective methods to help anyone learn languages faster (Tom Thorne Novels)

Fluent English Publishing

English Irregular Verbs Complete: Learn in Days, Keep Forever

Independently published

320 speaking questions to become fluent in French, bilingual edition English/French, for all levels: with instructions and space for your notes

320 speaking questions to become fluent in Italian, bilingual edition English/Italian, for all levels (English Edition)