Four Types

Lean Enterprise Institute, Inc.

Four Types of Problems                          

Penguin

Surrounded by Idiots: The Four Types of Human Behaviour (or, How to Understand Those Who Cannot Be Understood) (Vermilion)

CreateSpace Independent Publishing Platform

The Four People Types: And what drives them      

Independently Published

The Four Types of Narcissism: Understanding the Narcissistic Personality Disorder and Introducing Revolutionary Ways for Extraordinary Emotional Abuse Recovery

St. Martin's Essentials

Surrounded by Idiots Revised & Expanded Edition: The Four Types of Human Behavior and How to Effectively Communicate with Each in Business (and in Life) (English Edition)

Independently published

Parenting as a Type Four: Tools for Parenting with Clarity, Compassion, and Confidence (The Aligned Parent)

The Four Types of Dogs Every Business Needs: How To Build the Right Team To Grow Your Business and Have A Balanced Life (English Edition)

Independently published

The Four Types of Human Behavior: How to Master Communication with Difficult People

Kailash

Die 4 Happiness-Typen: Wie Erwartungen unsere Glücksfähigkeit prägen

Kiepenheuer & Witsch GmbH

Auf allen vieren: Roman