World's Best Inspirational Books to Change Your Life, 7 Books: Richest Man in Babylon, The Game of Life and How to Play It, The Power of Faith, The Master Key System , The Power of Your Sub-conscious Mind, The Art of Public Speaking, Think & Grow RichNapoleon Hill
33 Masterpieces of Philosophy and Science to Read Before You Die (Illustrated): Utopia, The Meditations, The Art of War, The Kama Sutra, CandideH.G. Wells2.5
The 5 Essential People Skills: How to Assert Yourself, Listen to Others, and Resolve ConflictsDale Carnegie4
The Dale Carnegie Leadership Mastery Course: How to Challenge Yourself and Others to GreatnessDale Carnegie4
Der Erfolg ist in dir: Wie man in einer sich rasch verändernden Welt mit Menschen umgeht, Probleme löst und sich durchsetztDale Carnegie