| 2006 | 4.5 |
| 2006 | 3 |
Captive Queen: A Novel of Eleanor of Aquitaine | 2010 | 3.5 |
| 2010 | 0 |
Naming nature : the clash between instinct and science | 2009 | 3 |
The Bellini Madonna: A Novel | 2008 | 0 |
| 2009 | 4 |
| | 0 |
| | 2.5 |
| 2008 | 1 |
| | 0 |
Millennium Year By Year: A Chronicle of World History from AD 1000 to the Present Day | 1999 | 3 |
| 2000 | 3.33 |