APA-Zitierstil (7. Ausg.)

Gibbons, B. J. (2007). Speak easy: 52 brilliant ideas for giving stunning speeches (New ed.). Infinite Ideas.

Chicago-Zitierstil (17. Ausg.)

Gibbons, Barry J. Speak Easy: 52 Brilliant Ideas for Giving Stunning Speeches. New ed. Oxford, U.K: Infinite Ideas, 2007.

MLA-Zitierstil (9. Ausg.)

Gibbons, Barry J. Speak Easy: 52 Brilliant Ideas for Giving Stunning Speeches. New ed. Infinite Ideas, 2007.