- "Den faldende stjernes nat" (1971)
- "Ardas drage" (1980)
- "The Time Crystal" (1991)
- "The Crystal Throne" (1994)
- "Stormens øje" (1995)
- "Lysets barn" (1996)
- "Krystalporten" (1997)
- "Krystalkronen" (1998)
Faglitteratur:
- "The Encyclopedia of Science Fiction and Fantasy" (1974, co-redigeret med George W. Proctor)
- "Fantasy Book Review" (1977–1981, redigeret sammen med George W. Proctor)
- "The Cambridge Guide to Science Fiction" (1993)
- "Science Fiction:The Cambridge Companion" (2005, co-redigeret med John Clute)