Sir Terry Pratchett - I Libri
Altri autori
1996
- "The Unseen University Challenge - Discworld Quizbook" di David Langford
2000
- "Terry Pratchett: Guilty of Literature" di Andrew M. Butler, Edward James, Farah Mendlesohn
2001
- "The Josh Kirby Discworld Portfolio" di Josh Kirby
- "Terry Pratchett" di Andrew M. Butler
2002
- "The Wyrdest Link - Discworld Quizbook" di David Langford
2007
- "An Unofficial Companion to the Novels of Terry Pratchett" di Andrew M. Butler
2008
- "Secrets of The Wee Free Men and Discworld: The Myths and Legends of Terry Pratchett's Multiverse"
di Carrie Pyykkonen e Linda Washington
- "The Turtle Moves! Discworld's Story Unauthorized"
di Lawrence Watt-Evans