Day, Martin
Chronological Checklist
- The Guinness Book of Classic British TV (Enfield, Middlesex: Guinness Publishing, 1993) with Paul Cornell and Keith Topping
- Doctor Who: The Menagerie (London: Virgin, 1995)
- Doctor Who: The DisContinuity Guide (London: Virgin, 1995) with Paul Cornell and Keith Topping
- The New Trek Programme Guide (London: Virgin, 1995) with Paul Cornell and Keith Topping
- The Guinness Book of Classic British TV (Enfield, Middlesex: Guinness Publishing, 1996) with Paul Cornell and Keith Topping
- Doctor Who: The Devil Goblins from Neptune (London: BBC Books, 1997) with Keith Topping
- X-Treme Possibilities (an X-Files Episode Guide) (London: Virgin, 1997) with Paul Cornell and Keith Topping
- Doctor Who: The Hollow Men (London: BBC Books, 1998) with Keith Topping
- Another Girl, Another Planet (London: Virgin Books, 1998) with Len Beech
- The Avengers Dossier (London: Virgin, 1998) with Paul Cornell and Keith Topping
- Doctor Who: Bunker Soldiers (London: BBC Books, 2001)
- Doctor Who: The Sleep of Reason (London: BBC Books, 2004)
- Doctor Who: Wooden Heart (London: BBC Books, 2007)
- Merlin: Lancelot and Guinevere (New York: Bantam Books, 2010)