Wireshark for Security Professionals
Jessey Bullock & Jeff T. Parker
The Hacker Playbook 2: Practical Guide To Penetration Testing
Peter Kim
Linux in a Nutshell
Arnold Robbins & Ellen Siever & Stephen Figgins & Robert Love
Unix Power Tools
Shelley Powers, Jerry Peek, Tim O'Reilly & Mike Loukides
Introduction to Sociology 2e
Heather Griffiths & Nathan Keirns & Gail Scaramuzzo & Susan Cody-Rydzewski & Eric Strayer & Sally Vyrain