http://www.amazon.com/Penetration-Testing-Hands-On-Introduction-Hacking/dp/1593275641
The-Hacker-Playbook-2-Practical-Guide-To-Penetration-Testing-By-Peter-Kim-Psycho.Killer
Red Team Assessment Reference Manual
gray-hat-hacking
Network Security Assessment (by O’Reilly, 2nd edition)
Hacking Exposed Linux
Red Team Field Manual (RTFM) (by Ben Clarke)
Nmap Network Scanning: The Official Nmap Project (by Gordon Lyon)
Guide to Network Discovery and Security Scanning
Hacking Exposed 7: Network Security Secrets and Solutions (by Stuart McClure/Joel Scambray/George Kurtz)
Metasploit Unleashed Guide
Hackers Playbook (by Peter Kim)
Network Security Assessment (by O’Reilly, 2nd edition)
Targeted Cyber Attacks (by Cygress)
Metasploit – The Penetration Tester’s Guide (by David Kennedy)