New World Library · Three Rivers Press
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| 20 Advanced Communication Tips for Couples: A 90-Minute Investment in a Better Relationship | 978-0-609-80031-7 (0-609-80031-0) | 1997 |
| 20 Communication Tips For Couples | 978-1-880032-74-9 (1-880032-74-0) | 1995 |
| 20 Communication Tips for Couples: A 30-Minute Guide to a Better Relationship | 978-1-880032-68-8 (1-880032-68-6) | 1995 |