Cita APA (7a ed.)

Helder, C. A. (2013). The Ultimate Book of Influence: 10 Tools of Persuasion to Connect, Communicate, and Win in Business (1st edition.). Wiley Imprint.

Cita Chicago Style (17a ed.)

Helder, Chris Author. The Ultimate Book of Influence: 10 Tools of Persuasion to Connect, Communicate, and Win in Business. 1st edition. [Place of publication not identified]: Wiley Imprint, 2013.

Cita MLA (9a ed.)

Helder, Chris Author. The Ultimate Book of Influence: 10 Tools of Persuasion to Connect, Communicate, and Win in Business. 1st edition. Wiley Imprint, 2013.