Gaya APA

Tracy, B., Stein, C. (2017). Believe It to Achieve It: Overcome Your Doubts, Let Go of the Past, and Unlock Your Full Potential . London: TarcherPerigee.

Gaya MLA

Tracy, Brian., Stein, Christina. "Believe It to Achieve It: Overcome Your Doubts, Let Go of the Past, and Unlock Your Full Potential". London: TarcherPerigee, 2017. Text.