Linux Server Security
Chris Binnie
Red Hat Enterprise Linux 6 Administration
Sander van Vugt
Advanced Penetration Testing
Wil Allsopp
Hacking the Cable Modem
DerEngel
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain