Monsters in the Dark: The Making of X-COM: UFO Defense
David L. Craddock
Guards! Guards!
Terry Pratchett
Discworld (8)
The Immortals
Tracy Hickman
For Us, the Living: A Comedy of Customs
Robert A. Heinlein
Out of the Silent Planet
C.S. Lewis
The Space Trilogy (1)
Mere Christianity
Perelandra
The Space Trilogy (2)
That Hideous Strength
The Space Trilogy (3)