| year of publication | ISBN | author(s) | title |
|---|---|---|---|
| 2000 | 978-0-9679162-0-0 | Duane Lakin | The Unfair Advantage: Sell with NLP! |
| 2005 | 978-0-9679162-1-7 | Duane Lakin | The Unfair Advantage: Sell with NLP! |
| 2012 | 978-0-9679162-4-8 | '' | The Unfair Advantage: Sell with NLP!: Revised Edition |