| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Forecasts of the South African population for the period, 1985-2020 | 978-0-7972-0310-5 (0-7972-0310-9) | 1990 |
| The aging of the South African population: Implications for business | 978-0-7972-0060-9 (0-7972-0060-6) | 1986 |