| 2004 | 4.42 |
| 1976 | 4.39 |
| 2002 | 4.5 |
| 1961 | 3.95 |
| 1 | 3.93 |
| 1979 | 3.58 |
| 2008 | 4.21 |
| 2000 | 3.83 |
| 2006 | 3.57 |
The Mote in God's Eye - Larry Niven
- Jerry Pournelle
| 1974 | 3.79 |
Breaking the Spell: Religion as a Natural Phenomenon | 2006 | 3.25 |
The Last Days of the Incas | 2007 | 4.5 |
Neuromancer - William Gibson
- Giampaolo Cossato (Translator)
- Sandro Sandrelli (Translator)
| 1984 | 3.86 |
| 2001 | 4.34 |
| 2008 | 4.22 |
| 1996 | 3.86 |
| 1962 | 3.91 |
| 1992 | 4.08 |
| 1985 | 4.05 |
So Long, and Thanks for All the Fish | 1984 | 3.87 |