| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Reach Out and Sell Someone | 978-0-13-753624-5 (0-13-753624-0) | 1983 |
| Winning by Telephone | 978-0-13-960963-3 (0-13-960963-6) | 1982 |
Dr. Gary S. Goodman · g G · G Goodman · Gary S. Goodman · Gary S. Goodman PhD · Gary S., PhD Goodman