| title | ISBN-13 | year of publica- tion | other author(s) | |
|---|---|---|---|---|
| Die Ameisen: Biologie und Verhalten | 978-3-406-44752-5 | 2007 | ||
| Western Civilization from 1500 | 978-0-06-088160-3 | 2007 | Ahmed Ibrahim | |
| Western Civilization from 1500 | 978-0-06-467102-6 | 1991 | ||
| Western Civilization to 1500 | 978-0-06-088162-7 | 2006 | John Chuchiak | |
| Western Civilization to 1500 | 978-0-06-467101-9 | 1991 | ||