| 其他書名 | Proof-- Nice Guys Do Finish First! How Dayle Maloney and Friends Climbed to Success in Network Marketing |
| 出版 | Williams & Wilson International Press, 2001 |
| ISBN | 09664118629780966411867 |
| URL | http://books.google.com.hk/books?id=ijjaDMYMYzoC&hl=&source=gbs_api |