Brave New World
Aldous Huxley
The Communist Manifesto
Karl Marx
Notes: Mark S. sounds like Marx if you say it fast enough.

The Death of Ivan Ilyich
Leo Tolstoy
Notes: Mentioned in 2x07.
Hadji Murad
Leo Tolstoy
Notes: Mentioned in 2x07.
Severance
Ling Ma
Notes: It's the titular character
The Odyssey
Homer
Notes: After 2x07, frequent reference in the Tumblr tag.

Strange Case of Dr. Jekyll & Mr. Hyde
Robert Louis Stevenson
Notes: Helena got a strange case why is she around
Metamorphoses
Ovid
Orpheus and Eurydice (Book 10)
Notes: Frequent reference in the Tumblr tag
R.U.R. (Rossum's Universal Robots)
Karel Capek
Notes: Contains a character named Helena who is the daughter of the company's chairman and has her own robot counterpart/clone.

The Republic
Plato
The Allegory of the Cave
