| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Turn your customers into your sales force: The art of winning repeat and referral customers | 978-O-13-435165-O (O-13-435165-7) | 1991 |
R.R. · R. Reck · R. Richard · Richard R. · Ross R. Reck · Ross Reck · Ross Richard