Fluent Forever

CROWN

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

Collins

Fluent in 3 Months (English Edition)            

Pearson Education Limited

I don't want to live forever! Info Trail Fluent  

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

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

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

Speed Reading: Fluent Accelerated Learning Techniques to Evolve Your Memory With Brain Training for Unlimited Focus and Super Fast Thinking Forever (English Edition)

Independently published

German Language for Beginners: The Ultimate Guide to Improve Your German, Learning New Skills with Phrases and Advanced Techniques from a Basic German to Forever Fluent

Independently published

How to Learn a Foreign Language & Become Fluent in 3 Months: 2000 Steps to Success with a Complete 90-Day Weekly Plan, Proven Tips and Word Lists (Includes Spanish Course Example & Workbook)

Robinson

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