A blank cell in the table indicates that the information is unknown.
"N/A" indicates that the role in question does not exist for that version of the story.
Columns are in chronological order from 1978–2005, except for the two German radio series (1981 and 1990–1991).
A blank cell in the table indicates that the information is unknown.
"N/A" indicates that the role in question does not exist for that version of the story.
^ abcThe Hitchhiker's Guide to the Galaxy: Collector's Edition 8 CD set, containing the original 12 radio episodes from 1978 and 1980, as well as an untransmitted interview with Ian Johnstone and the twentieth anniversary programme. ISBN0-563-47702-4.
^ abThe Hitch-Hiker's Guide to the Galaxy: Part One, 2 LP set. Hannibal Records, 1982, HNBL2301.
^ abThe Hitch-Hiker's Guide to the Galaxy Part Two: The Restaurant at the End of the Universe, LP. Hannibal Records, 1982, HNBL 1307.
^ abThe Hitchhiker's Guide to the Galaxy (TV series) UK Region 2 DVD release, 2002, BBCDVD 1092. Includes on-screen notes by Kevin Jon Davies, documentaries by Kevin Jon Davies, deleted scenes and other BBC TV clips.
^ abAdams, Douglas (1994). The Illustrated Hitchhiker's Guide to the Galaxy (US Hardcover ed.). Harmony Books. ISBN0-517-59924-4.
^ abcdThe Hitchhiker's Guide to the Galaxy: The Tertiary Phase 3 CD set. ISBN0-563-51043-9.
^ abcdThe Hitchhiker's Guide to the Galaxy: The Quandary Phase 2 CD set. ISBN0-563-50496-X.
^ abcdThe Hitchhiker's Guide to the Galaxy: The Quintessential Phase 2 CD set. ISBN0-563-50407-2.
^ abThe Hitchhiker's Guide to the Galaxy (film) UK Region 2 DVD release, 2005. Includes commentaries by Garth Jennings, Nick Goldsmith, Martin Freeman and Bill Nighy, and Robbie Stamp with Sean Sollé. Also includes the documentary Don't Crash: The Making of the Film of the Novel of the Radio Series of The Hitchhiker's Guide to the Galaxy.
^ abcdAdams, Douglas (1996). Per Anhalter ins All Teil 7-15 (German radio adaptation of Life, the Universe and Everything and So Long, and Thanks for All the Fish). Translation and audio adaptation by Walter Andreas Schwarz (Compact Disc ed.). Der Hörverlag. ISBN3-89584-171-4.