Beginning Modern Unix
Manish Jain
Nmap: Network Exploration and Security Auditing Cookbook
Paulino Calderon
CompTIA Linux+ Guide to Linux Certification
Jason Eckert
Practical Reverse Engineering
Bruce Dang
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain