MacDonald, L. (2004). Learn to be an optimist: Visualise your way to success, fine lifelong confidence and happiness, discover self-belief. Duncan Baird.
Chicago-Zitierstil (17. Ausg.)MacDonald, Lucy. Learn to Be an Optimist: Visualise Your Way to Success, Fine Lifelong Confidence and Happiness, Discover Self-belief. London: Duncan Baird, 2004.
MLA-Zitierstil (8. Ausg.)MacDonald, Lucy. Learn to Be an Optimist: Visualise Your Way to Success, Fine Lifelong Confidence and Happiness, Discover Self-belief. Duncan Baird, 2004.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.