Stanford Encyclopedia of Philosophy
SEP
The Problem of Evil
Michael Tooley
Hegel, Idealism, and Analytic Philosophy
Tom Rockmore
Greatness Is a Choice
Ethan Penner
A Concise Introduction to Linguistics
Bruce M. Rowe & Diane P. Levine & Brian M. Rowe
The VR Book: Human-Centered Design for Virtual Reality
Jason Jerald