Tracy, B. (2001). The 21 success secrets of self-made millionaires: How to achieve financial independence faster and easier than you ever thought possible. Berrett-Koehler Pub.
Chicago-Zitierstil (17. Ausg.)Tracy, Brian. The 21 Success Secrets of Self-made Millionaires: How to Achieve Financial Independence Faster and Easier than You Ever Thought Possible. San Francisco: Berrett-Koehler Pub, 2001.
MLA-Zitierstil (9. Ausg.)Tracy, Brian. The 21 Success Secrets of Self-made Millionaires: How to Achieve Financial Independence Faster and Easier than You Ever Thought Possible. Berrett-Koehler Pub, 2001.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.