Nitti, M. A. (2014). Trophy Effect: Destroying self-doubt, discovering your true self, and taking control of your life forever! [Motivational Press, Inc.].
Chicago-viite (17. p.)Nitti, Michael A. Trophy Effect: Destroying Self-doubt, Discovering Your True Self, and Taking Control of Your Life Forever! [Carlsbad, California]: [Motivational Press, Inc.], 2014.
MLA-viite (9. p.)Nitti, Michael A. Trophy Effect: Destroying Self-doubt, Discovering Your True Self, and Taking Control of Your Life Forever! [Motivational Press, Inc.], 2014.
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