CCNA Security Official Exam Certification Guide (Exam 640-553)
Cisco Press
2008, English | 
Network Security Technologies and Solutions (CCIE Professional Development Series)
Cisco Press
2008, English | 
Interconnecting Cisco Network Devices, Part 1 (ICND1): CCNA Exam 640-802 and ICND1 Exam 640-822 (2nd Edition)
Cisco Press
2008, English | 
Interconnecting Cisco Network Devices, Part 2 (ICND2): (CCNA Exam 640-802 and ICND exam 640-816) (3rd Edition)
Cisco Press
2008, English |
MPLS Fundamentals
Cisco Press
2006, English | 
Voice over IP Fundamentals (2nd Edition)
Cisco Press
2006, English | 
The Complete Cisco VPN Configuration Guide
Cisco Press
2005, English | 
Cisco ASA, PIX, and FWSM Firewall Handbook (2nd Edition) (Networking Technology: Security)
Cisco Press
2007, English |
Implementing Cisco Unified Communications Manager, Part 1 (CIPT1) (Authorized Self-Study Guide)
Cisco Press
2008, English | 
Cisco Networking Simplified (2nd Edition) (Networking Technology)
Cisco Press
2008, English | 
CCNP BCMSN Official Exam Certification Guide (4th Edition)
Cisco Press
2006, English | 
CCIE Routing and Switching Exam Certification Guide (3rd Edition)
Cisco Press
2007, English |