Adams, Douglas
Chronological Checklist
Series – Hitchhiker's Guide to the Galaxy
- The Hitch Hiker's Guide to the Galaxy (London: Pan Books, 1979)
- The Restaurant at the End of the Universe (London: Pan Books, 1980)
- Life, the Universe and Everything (London: Pan Books, 1982)
- So Long, and Thanks for All the Fish (London: Pan Books, 1984)
- The Hitchhiker's Trilogy (New York: Crown Publishers, 1984)
- The Original Hitchhiker Radio Scripts (London: Pan Books, 1985)
- The Hitch Hiker's Guide to the Galaxy: A Trilogy in Four Parts (London: William Heinemann, 1986)
- The Hitchhiker's Quartet (New York: Harmony Books, 1986)
- The Hitchhiker's Guide to the Galaxy: The Original Radio Scripts (London: Pan Books, 1986)
- The More than Complete Hitchhiker's Guide: Five Stories (Ann Arbor, Michigan: Longmeadow Press, 1987)
- Mostly Harmless (London: William Heinemann, 1992)
- The Illustrated Hitch Hiker's Guide to the Galaxy (London: Weidenfeld and Nicolson, 1994)
- The Hitchhiker's Trilogy (New York: Science Fiction Book Club, 2000)
- The Salmon of Doubt: Hitchhiking the Galaxy One Last Time (London: Macmillan, 2002)
- The Hitchhiker's Guide to the Galaxy: The Original Radio Scripts: 25th Anniversary Edition Containing Previously Unpublished Material (London: Pan Books, 2003)
- The Hitchhiker's Guide to the Galaxy Radio Scripts: The Tertiary, Quandary and Quintessential Phases (London: Pan Books, 2005) with Dirk Maggs
- The Ultimate Hitchhiker's Guide (New York: Random House/Gramercy, 2009)
- The Hitchhiker's Guide to the Galaxy: The Nearly Definitive Edition (London: William Heinemann, 2014)