Bruce K. · Bruce N. · K. Newbold
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Six Billion Plus: World Population in the Twenty-first Century | 978-0-7425-3929-7 (0-7425-3929-6) | 2006 |
| Six Billion Plus: World Population in the Twenty-first Century | 978-0-7425-1617-5 (0-7425-1617-2) | 2002 |