(2004). Learn to be an optimist: Visualise your way to success, fine lifelong confidence and happiness, discover self-belief. Duncan Baird Publisheres.
Styl cytowania ChicagoLearn to Be an Optimist: Visualise Your Way to Success, Fine Lifelong Confidence and Happiness, Discover Self-belief. London: Duncan Baird Publisheres, 2004.
Styl cytowania MLALearn to Be an Optimist: Visualise Your Way to Success, Fine Lifelong Confidence and Happiness, Discover Self-belief. Duncan Baird Publisheres, 2004.
Uwaga: Te cytaty mogą odróżniać się od wytycznej twojego fakultetu..