Most Used Titles in Class QA9.46
| Rank | TITLE | Lib | Uses | Year |
| 1 | Modal logic / Alexander Chagrov and Michael Zakharyaschev | ASU | 5 | 1997 |
| 2 | Self reference and modal logic / C. Smoryński | ASU | 2 | 1985 |
| 3 | Tools and techniques in modal logic / Marcus Kracht | ASU | 1999 | |
| 4 | Modal logic / Patrick Blackburn, Maarten de Rijke, Yde Venema | ASU | 2001 |