Aliens from Space
Robert Silverberg
Operation Stinky
Clifford D. Simak
Idiot's Crusade
Honorable Opponent
Aliens for Neighbours
Aliens for Lunch
Stephanie Spinner & Jonathan Etra
Aliens for Dinner
Stephanie Spinner
Aliens Ate My Pickup
Mercedes Lackey
Aliens and AIs
Lawrence M. Schoen
The Aliens Among Us
James White
Aliens: The Anthropology of Science Fiction
Eric S. Rabkin & George E. Slusser
Aliens
Jordan E. Rosenfeld
Alan Dean Foster
Alien (2)
Rick Norwood
Probability Zero (1)
Alien Resurrection Scriptbook: Based on the Motion Picture
Joss Whedon
The Alien
Raymond F. Jones
The Alien Years
Voyagers II: The Alien Within
Ben Bova
Voyagers (2)