The Friendship Formula

The Friendship Formula: A Tale of Unity (English Edition)

The Friendship Formula: How to Make Real Connections in a Disconnected World(Ditch the small talk, build real bonds, and make friendships that actually ... Motivational Books series) (English Edition)

Notion Press

The Friendship Formula (English Edition)        

The Friendship Formula: Building Lifelong Bonds in a Fragmented World: A science-backed approach to cultivating meaningful friendships (English Edition)

LDA

The Friendship Formula                          

Independently published

The Friendship Formula: How to Say Goodbye to Loneliness and Discover Deeper Connection

Anima

The Friendship Formula: Add great friends, subtract toxic people and multiply your happiness

The Friendship Formula: How to Make and Keep Friends for Life (English Edition)

The friendship formula: secrets of maintaining true friendships (English Edition)

FRIENDSHIP FORMULA:: A guide to socializing and making friends easily (English Edition)