Booher, D. (2003). Speak with confident: Powerful presentations that inform, inspire, and persuade. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Booher, Dianna. Speak with Confident: Powerful Presentations That Inform, Inspire, and Persuade. New York: McGraw-Hill, 2003.
Lua MLA (8ú heag.)Booher, Dianna. Speak with Confident: Powerful Presentations That Inform, Inspire, and Persuade. McGraw-Hill, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.