APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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