Spence, G. (2005). Win Your Case: How to Present, Persuade, and Prevail-Every Place, Every Time (Audio Book). HarperCollins.
Chicago-Zitierstil (17. Ausg.)Spence, Gerry. Win Your Case: How to Present, Persuade, and Prevail-Every Place, Every Time (Audio Book). USA: HarperCollins, 2005.
MLA-Zitierstil (9. Ausg.)Spence, Gerry. Win Your Case: How to Present, Persuade, and Prevail-Every Place, Every Time (Audio Book). HarperCollins, 2005.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.