| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Descubra la diferencia entre amor y sexo | 978-0-8254-1315-5 (0-8254-1315-X) | 2006 | P. Roger Hillerstrom |
| The Intimacy Cover-Up: Uncovering the Difference Between Love and Sex | 978-0-8254-2894-4 (0-8254-2894-7) | 2004 | " |