| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Understand and be Excellent at Sex 22-39 Year Olds: Love, Sex Techniques, Emotions, Forming Lasting Relationships and Break-Ups | 978-0-9931872-0-9 (0-9931872-0-X) | 2015 |
| Understand and be Excellent at Sex 22-39 Year Olds: Love, Sex Techniques, Emotions, Forming Lasting Relationships and Break-Ups | 978-0-9931872-1-6 (0-9931872-1-8) | 2015 |