Spence, G. (2005). Win Your Case: How to Present, Persuade, and Prevail-Every Place, Every Time (Audio Book). HarperCollins.
Chicago-referens (17:e uppl.)Spence, Gerry. Win Your Case: How to Present, Persuade, and Prevail-Every Place, Every Time (Audio Book). USA: HarperCollins, 2005.
MLA-referens (9:e uppl.)Spence, Gerry. Win Your Case: How to Present, Persuade, and Prevail-Every Place, Every Time (Audio Book). HarperCollins, 2005.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.