| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Above the Clouds | 978-0-620-24524-1 (0-620-24524-7) | 2001 | Mike Malherbe |
| Jokes You Can Tell Anywhere in English and Afrikaans | 978-0-620-31661-3 (0-620-31661-6) | 1986 | |
| Would You Please Say a Few Words?: Speaking is Not a Dying Art, it's One of the Fundamental Assets of Every Successful Person | 978-0-620-22730-8 (0-620-22730-3) | 2001 | |