| title | ISBN-13 | year of publica- tion | other author(s) |
|---|---|---|---|
| High-Performance Entrepreneurship | 978-0-471-12613-3 | 2002 | Vilma Barr |
| The Work Less, Live More Workbook: Get Ready for Semi-Retirement | 978-1-4133-0695-8 | 2007 | |
| Work Less, Live More: The New Way to Retire Early | 978-1-4133-0200-4 | 2005 | Bob Clyatt |
| Work Less, Live More: The Way to Semi-Retirement | 978-1-4133-0705-4 | 2007 | |