| title | ISBN-13 | year of publica- tion | |
|---|---|---|---|
| A Book for People Who Want to Become Stinking Rich But Aren't Quite Sure How | 978-0-7522-2670-5 | 2008 | |
| Couple's Book | 978-0-340-75238-8 | 2004 | |
| Lose Weight! Get Laid! Find God!: The All-In-One Life Planner | 978-0-7522-2643-9 | 2007 | |
| Mutters Buch | 978-3-442-37154-9 | 2009 | |
| The Father's Book | 978-0-7522-2628-6 | 2007 | |
| The Mother's Book | 978-0-7522-2629-3 | 2007 | |
| This Diary Will Change Your Life 2004 | 978-0-670-91462-3 | 2003 | |
| This Diary Will Change Your Life 2005 | 978-0-340-75235-7 | 2004 | |
| This Diary Will Change Your Life 2006 | 978-0-7522-2604-0 | 2005 | |
| This Diary Will Change Your Life 2007 | 978-0-7522-2617-0 | 2006 | |
| This Diary Will Change Your Life 2008 | 978-0-7522-2657-6 | 2007 | |
| This Diary Will Change Your Life 2009 | 978-0-7522-2668-2 | 2008 | |
| Vaters Buch | 978-3-442-37165-5 | 2009 |